Now that we’ve had enough wine and food, it’s time to do something.
Director Li's expression was a little solemn.
"Exactly."
"Two meat and one vegetable, is there any problem?"
"It's not really a troublesome thing. I just want to ask for your opinion." Director Li smiled sheepishly and asked, "... When will this 2000-qubit computer be available?"
If possible, the relevant departments would naturally hope to change the encryption algorithm so that they can control it for a little longer.
In order to control the last link of the mission chain of Earth and Moon, there are still a lot of things waiting for him to complete.
Director Li said with a smile.
Thinking of the appointment made on the phone yesterday, Lu Zhou probably guessed who it was. He threw the tissue into the packing box, tied the plastic bag tightly and put it aside, cleared his throat and said.
"Uh, no..."
"easy to use?"
"Exactly."
"... Then, can you handle that quantum repeater?"
However, just as he was about to get up from his desk, there was a sudden knock on the door outside the office.
"Exactly."
The birth of any new technology takes time to settle. Although the quantum encryption algorithm he developed is not something particularly brilliant in his own opinion, there is still no problem in making do with it for a while.
"Put aside the parts that you don't understand even if I talk about it, you just need to know that this thing is basically the core bottleneck limiting the commercialization of quantum communication technology."
In order to control the last link of the mission chain of Earth and Moon, there are still a lot of things waiting for him to complete.
"Your worries are not unreasonable," Lu Zhou tapped his index finger on the table. After thinking for a moment, he said, "But it's really hard to say. I can only tell you that the bottleneck of 1,000 qubits is It can break through in a short time, but 2,000 qubits... I have to wait until at least 1,000 qubits break through before I can give you an accurate estimate."
"Put aside the parts that you don't understand even if I talk about it, you just need to know that this thing is basically the core bottleneck limiting the commercialization of quantum communication technology."
Lu Zhou: "..."
"You mean... quantum communication?"
Thinking of the appointment made on the phone yesterday, Lu Zhou probably guessed who it was. He threw the tissue into the packing box, tied the plastic bag tightly and put it aside, cleared his throat and said.
"... Then, can you handle that quantum repeater?"
These two major technical difficulties are exactly mentioned in the DLCZ plan, which uses the combination of quantum memory and single-photon channels to suppress attenuation to achieve long-distance quantum communication.
"...You're going to eat this for lunch?"
Silence fell in the office.
However, just when he was about to speak, Director Li couldn't help but take the lead.
"... Then, can you handle that quantum repeater?"
If further subdivided, quantum repeaters can also be subdivided into two propositions: "quantum memory" and "optimization of efficiency and storage time of quantum state writing and reading".
If further subdivided, quantum repeaters can also be subdivided into two propositions: "quantum memory" and "optimization of efficiency and storage time of quantum state writing and reading".
"Please come in."
If further subdivided, quantum repeaters can also be subdivided into two propositions: "quantum memory" and "optimization of efficiency and storage time of quantum state writing and reading".
Director Li said nothing and glanced at Wang Peng.
However, it is inevitable that individuals generally have such concerns.
Thinking of the appointment made on the phone yesterday, Lu Zhou probably guessed who it was. He threw the tissue into the packing box, tied the plastic bag tightly and put it aside, cleared his throat and said.
Lu Zhou: "..."
"It's normal not to see the signs of this," Lu Zhou said, "because current breakthroughs in this field are mainly focused on achieving photon entanglement and enhancing signal strength. But if we want to truly realize quantum communication, the key lies in quantum repeaters. superior."
The door of the office opened, and Director Li's familiar and unsurprising face appeared at the door. When he saw the packing box placed next to the table, he was about to say hello with a smile, and couldn't help but smile. Surprised expression.
The reason why quantum communication can be kept absolutely confidential is because of the special characteristics of the wave function. Once the photons transmitting the information are intercepted, any observation behavior will lead to the collapse of the entangled state.
Director Li was confused: "Isn't it possible that it won't even work?"
"Uh, no..."
Upon hearing this, Lu Zhou's eyebrows suddenly raised with interest and he asked.
"If not, let's get down to business. I have to go back to the Institute for Advanced Study at around three in the afternoon for a meeting about the work of the Lunar Orbit Construction Committee." After looking at the time on his watch, Lu Zhou looked at Director Li Continued, "What exactly were you talking about to me on the phone yesterday?"
"...You're going to eat this for lunch?"
After a pause, Lu Zhou continued.
"Exactly."
Lu Zhou gave him a strange look.
Thinking of the appointment made on the phone yesterday, Lu Zhou probably guessed who it was. He threw the tissue into the packing box, tied the plastic bag tightly and put it aside, cleared his throat and said.
These two major technical difficulties are exactly mentioned in the DLCZ plan, which uses the combination of quantum memory and single-photon channels to suppress attenuation to achieve long-distance quantum communication.
"You mean... quantum communication?"
"Two meat and one vegetable, is there any problem?"
"Put aside the parts that you don't understand even if I talk about it, you just need to know that this thing is basically the core bottleneck limiting the commercialization of quantum communication technology."
"It's easy to use! It's so easy to use." Director Li clapped his hands and said with a smile, "You don't know, our deputy director of the Institute of Information Engineering of the Chinese Academy of Sciences was so surprised that he almost lost his mind after seeing it. My chin hit the ground..."
"Then what do you think we should do?"
After a pause, Lu Zhou continued.
"It's about the quantum encryption algorithm."
"Exactly."
"Stop it, there's no need to explain the cause and effect to me," Lu Zhou raised his hand, stopped Director Li's words, sighed and said, "... Just tell me what trouble you have."
"Uh, no..."
The door of the office opened, and Director Li's familiar and unsurprising face appeared at the door. When he saw the packing box placed next to the table, he was about to say hello with a smile, and couldn't help but smile. Surprised expression.
Lu Zhou gave him a strange look.
"Stop it, there's no need to explain the cause and effect to me," Lu Zhou raised his hand, stopped Director Li's words, sighed and said, "... Just tell me what trouble you have."
"... Then, can you handle that quantum repeater?"
"If not, let's get down to business. I have to go back to the Institute for Advanced Study at around three in the afternoon for a meeting about the work of the Lunar Orbit Construction Committee." After looking at the time on his watch, Lu Zhou looked at Director Li Continued, "What exactly were you talking about to me on the phone yesterday?"
However, just when he was about to speak, Director Li couldn't help but take the lead.
Every time the old man courted him, he either wanted to introduce someone to him or wanted to trouble him with something.
The office was quiet again.
Lu Zhou gave him a strange look.
All encryption algorithms, including asymmetric encryption algorithms, target traditional communication methods. In the face of quantum communication technology, encryption is simply redundant.
This time the silence lasted a little longer.
Director Li said nothing and glanced at Wang Peng.
"You mean... quantum communication?"
Lu Zhou gave him a strange look.
If further subdivided, quantum repeaters can also be subdivided into two propositions: "quantum memory" and "optimization of efficiency and storage time of quantum state writing and reading".
Although these are commonplace things, Director Li has heard many people tell him similar things before, but this time it was said from Academician Lu's mouth, and the meaning was instantly different.
If further subdivided, quantum repeaters can also be subdivided into two propositions: "quantum memory" and "optimization of efficiency and storage time of quantum state writing and reading".
After listening to Lu Zhou's explanation, his heart suddenly felt hot and he quickly asked.
After listening to Lu Zhou's explanation, his heart suddenly felt hot and he quickly asked.
"Is this 'unconditionally secure' quantum communication difficult?"
Wang Peng nodded, picked up the packing box and exited the office with understanding, and closed the door behind him.
This time the silence lasted a little longer.
Director Li was confused: "Isn't it possible that it won't even work?"
"This problem can only be solved fundamentally," Lu Zhou thought for a while and then said, "In other words, we can eliminate the possibility of leaking secrets through communication methods!"
"I think I did say that."
"It's not really a troublesome thing. I just want to ask for your opinion." Director Li smiled sheepishly and asked, "... When will this 2000-qubit computer be available?"
There were only two people left in the office.
All encryption algorithms, including asymmetric encryption algorithms, target traditional communication methods. In the face of quantum communication technology, encryption is simply redundant.
"Is this 'unconditionally secure' quantum communication difficult?"
There were only two people left in the office.
Lu Zhou always had a bad feeling when he saw this guy describing it with joy.
Seeing that there was no one else around, Director Li finally spoke.
If possible, the relevant departments would naturally hope to change the encryption algorithm so that they can control it for a little longer.
The office was quiet again.
"It's about the quantum encryption algorithm."
"Well," Lu Zhou nodded as he looked at the thoughtful Director Li, "It's not that there is little progress in this area, but that there is no progress at all. This is the same all over the world..."
However, it is inevitable that individuals generally have such concerns.
Although these are commonplace things, Director Li has heard many people tell him similar things before, but this time it was said from Academician Lu's mouth, and the meaning was instantly different.
"Well," Lu Zhou nodded as he looked at the thoughtful Director Li, "It's not that there is little progress in this area, but that there is no progress at all. This is the same all over the world..."
Director Li's expression was a little solemn.
Upon hearing this, Lu Zhou's eyebrows suddenly raised with interest and he asked.
Thinking of the appointment made on the phone yesterday, Lu Zhou probably guessed who it was. He threw the tissue into the packing box, tied the plastic bag tightly and put it aside, cleared his throat and said.
The door of the office opened, and Director Li's familiar and unsurprising face appeared at the door. When he saw the packing box placed next to the table, he was about to say hello with a smile, and couldn't help but smile. Surprised expression.
"I think I did say that."
"Well," Lu Zhou nodded as he looked at the thoughtful Director Li, "It's not that there is little progress in this area, but that there is no progress at all. This is the same all over the world..."
Although these are commonplace things, Director Li has heard many people tell him similar things before, but this time it was said from Academician Lu's mouth, and the meaning was instantly different.
All encryption algorithms, including asymmetric encryption algorithms, target traditional communication methods. In the face of quantum communication technology, encryption is simply redundant.
"easy to use?"
After chewing Lu Zhou's words over and over again, Director Li pondered for a long time, and then he asked seriously after a while.
Every time the old man courted him, he either wanted to introduce someone to him or wanted to trouble him with something.
In order to control the last link of the mission chain of Earth and Moon, there are still a lot of things waiting for him to complete.
"Quantum repeater?"
"Then what do you think we should do?"
However, just as he was about to get up from his desk, there was a sudden knock on the door outside the office.
The office was quiet again.
"That's what it's for!" Director Li clapped his hands and continued, "The department held a meeting a few days ago to discuss this issue, but we really lack experts in this field, and we couldn't come up with it even after a long discussion. That’s why…”
"It's easy to use! It's so easy to use." Director Li clapped his hands and said with a smile, "You don't know, our deputy director of the Institute of Information Engineering of the Chinese Academy of Sciences was so surprised that he almost lost his mind after seeing it. My chin hit the ground..."
Don't update the encryption algorithm every three to five years. No matter how tenacious China's financial industry, communications industry, and Internet industry are, they will not be able to withstand such a torment...
All encryption algorithms, including asymmetric encryption algorithms, target traditional communication methods. In the face of quantum communication technology, encryption is simply redundant.
Lu Zhou nodded seriously.
Lu Zhou always had a bad feeling when he saw this guy describing it with joy.
"This problem can only be solved fundamentally," Lu Zhou thought for a while and then said, "In other words, we can eliminate the possibility of leaking secrets through communication methods!"
The office was quiet again.
"Stop it, there's no need to explain the cause and effect to me," Lu Zhou raised his hand, stopped Director Li's words, sighed and said, "... Just tell me what trouble you have."
Silence fell in the office.
Every time the old man courted him, he either wanted to introduce someone to him or wanted to trouble him with something.
Director Li said with a smile.
"It's not really a troublesome thing. I just want to ask for your opinion." Director Li smiled sheepishly and asked, "... When will this 2000-qubit computer be available?"
"... But I heard that quantum communication technology is not simple, right? Our country is relatively ahead in this area, and there are many achievements, but I have never seen the signs of this technology becoming mature."
In order to control the last link of the mission chain of Earth and Moon, there are still a lot of things waiting for him to complete.
"I think I did say that."
"...Since it's so useful, why do you come to me?"
Thinking of the appointment made on the phone yesterday, Lu Zhou probably guessed who it was. He threw the tissue into the packing box, tied the plastic bag tightly and put it aside, cleared his throat and said.
"...You're going to eat this for lunch?"
Upon hearing this, Lu Zhou's eyebrows suddenly raised with interest and he asked.
To put it more simply, if there is a third party C standing in the middle of the phone call between A and B, eavesdropping. No matter what method C adopts, whether using a bug or putting his ear against the wall, as long as C hears a word, A and B will immediately know that the communication has been eavesdropped, and the entire message will lose its meaning.
After listening to Lu Zhou's explanation, his heart suddenly felt hot and he quickly asked.
"... Then, can you handle that quantum repeater?"
Although these are commonplace things, Director Li has heard many people tell him similar things before, but this time it was said from Academician Lu's mouth, and the meaning was instantly different.
Now that we’ve had enough wine and food, it’s time to do something.
Director Li said with a smile.
"... But I heard that quantum communication technology is not simple, right? Our country is relatively ahead in this area, and there are many achievements, but I have never seen the signs of this technology becoming mature."
"... Then, can you handle that quantum repeater?"
Lu Zhou: "..."
"To be honest, it's not just difficult! It's quite difficult!"
Now that we’ve had enough wine and food, it’s time to do something.
As soon as he heard Director Li's words, Lu Zhou immediately understood what he was thinking. He had been worried about the timeliness of the technology for a long time.
"Didn't you say some time ago that after your carbon-based topological quantum processor chip comes out, it won't be long before the quantum computer can break through 1,000 qubits?"
However, it is inevitable that individuals generally have such concerns.
This time the silence lasted a little longer.
Lu Zhou picked up the water glass on the table and took a sip, moistening the mulberry seeds, preparing to comfort his old friend and tell him not to be too anxious. That set of encryption algorithms can be used first. When the 2000-qubit computer comes out, there may be new progress in the research of quantum repeaters.
"It's not a question of whether the estimate will work or not, but it's meaningless at all," Lu Zhou sighed. "If you just want some psychological comfort, you might as well ask a fortune teller. From the perspective of probability, it's 50-50. And …”
Lu Zhou nodded approvingly.
Lu Zhou thought for a while and nodded.
After listening to Lu Zhou's explanation, his heart suddenly felt hot and he quickly asked.
After chewing Lu Zhou's words over and over again, Director Li pondered for a long time, and then he asked seriously after a while.
"... But I heard that quantum communication technology is not simple, right? Our country is relatively ahead in this area, and there are many achievements, but I have never seen the signs of this technology becoming mature."
"...Since it's so useful, why do you come to me?"
In order to control the last link of the mission chain of Earth and Moon, there are still a lot of things waiting for him to complete.
"This problem can only be solved fundamentally," Lu Zhou thought for a while and then said, "In other words, we can eliminate the possibility of leaking secrets through communication methods!"
"Uh, no..."
"Your worries are not unreasonable," Lu Zhou tapped his index finger on the table. After thinking for a moment, he said, "But it's really hard to say. I can only tell you that the bottleneck of 1,000 qubits is It can break through in a short time, but 2,000 qubits... I have to wait until at least 1,000 qubits break through before I can give you an accurate estimate."
"I think I did say that."
Lu Zhou gave him a strange look.
Seeing that there was no one else around, Director Li finally spoke.
Lu Zhou nodded approvingly.
"That's what it's for!" Director Li clapped his hands and continued, "The department held a meeting a few days ago to discuss this issue, but we really lack experts in this field, and we couldn't come up with it even after a long discussion. That’s why…”
"It's about the quantum encryption algorithm."
It took about five minutes for Lu Zhou to briefly explain the technical difficulties of quantum communication and its advantages over traditional communication methods to Director Li.
"I think I did say that."
If further subdivided, quantum repeaters can also be subdivided into two propositions: "quantum memory" and "optimization of efficiency and storage time of quantum state writing and reading".
"I think I did say that."
Now that we’ve had enough wine and food, it’s time to do something.
This is the so-called "unconditional security"!
"Stop it, there's no need to explain the cause and effect to me," Lu Zhou raised his hand, stopped Director Li's words, sighed and said, "... Just tell me what trouble you have."
Thinking of the appointment made on the phone yesterday, Lu Zhou probably guessed who it was. He threw the tissue into the packing box, tied the plastic bag tightly and put it aside, cleared his throat and said.
However, just when he was about to speak, Director Li couldn't help but take the lead.
"Uh, no..."
"It's about the quantum encryption algorithm."
"Quantum encryption algorithms are always temporary. n qubits correspond to 2^n states, not 2 times n. In theory, if we just linearly increase the difficulty of the proposition, one day our encryption methods will There is no way we can keep up with the speed of our information technology development.”
"If not, let's get down to business. I have to go back to the Institute for Advanced Study at around three in the afternoon for a meeting about the work of the Lunar Orbit Construction Committee." After looking at the time on his watch, Lu Zhou looked at Director Li Continued, "What exactly were you talking about to me on the phone yesterday?"
"It's not really a troublesome thing. I just want to ask for your opinion." Director Li smiled sheepishly and asked, "... When will this 2000-qubit computer be available?"
Now that we’ve had enough wine and food, it’s time to do something.
"It's about the quantum encryption algorithm."
As soon as he heard Director Li's words, Lu Zhou immediately understood what he was thinking. He had been worried about the timeliness of the technology for a long time.
Lu Zhou thought for a while and nodded.
Changing the encryption algorithm is not a trivial matter like changing the Penguin password. It involves the reform of the entire communication field, and the hidden social costs that need to be paid are difficult to measure simply in terms of money.
The door of the office opened, and Director Li's familiar and unsurprising face appeared at the door. When he saw the packing box placed next to the table, he was about to say hello with a smile, and couldn't help but smile. Surprised expression.
If the bottleneck from 80 to 500 is so easy to break through, it is difficult to say how long the technical barriers from 500 to 1000, and from 1000 to 2000 can be maintained.
However, it is inevitable that individuals generally have such concerns.
In order to control the last link of the mission chain of Earth and Moon, there are still a lot of things waiting for him to complete.
"Well," Lu Zhou nodded as he looked at the thoughtful Director Li, "It's not that there is little progress in this area, but that there is no progress at all. This is the same all over the world..."
After listening to Lu Zhou's explanation, his heart suddenly felt hot and he quickly asked.
Lu Zhou: "..."
"It's not really a troublesome thing. I just want to ask for your opinion." Director Li smiled sheepishly and asked, "... When will this 2000-qubit computer be available?"
However, it is inevitable that individuals generally have such concerns.
If the bottleneck from 80 to 500 is so easy to break through, it is difficult to say how long the technical barriers from 500 to 1000, and from 1000 to 2000 can be maintained.
"Put aside the parts that you don't understand even if I talk about it, you just need to know that this thing is basically the core bottleneck limiting the commercialization of quantum communication technology."
"Quantum encryption algorithms are always temporary. n qubits correspond to 2^n states, not 2 times n. In theory, if we just linearly increase the difficulty of the proposition, one day our encryption methods will There is no way we can keep up with the speed of our information technology development.”
Changing the encryption algorithm is not a trivial matter like changing the Penguin password. It involves the reform of the entire communication field, and the hidden social costs that need to be paid are difficult to measure simply in terms of money.
All encryption algorithms, including asymmetric encryption algorithms, target traditional communication methods. In the face of quantum communication technology, encryption is simply redundant.
"Put aside the parts that you don't understand even if I talk about it, you just need to know that this thing is basically the core bottleneck limiting the commercialization of quantum communication technology."
As soon as he heard Director Li's words, Lu Zhou immediately understood what he was thinking. He had been worried about the timeliness of the technology for a long time.
It took about five minutes for Lu Zhou to briefly explain the technical difficulties of quantum communication and its advantages over traditional communication methods to Director Li.
Changing the encryption algorithm is not a trivial matter like changing the Penguin password. It involves the reform of the entire communication field, and the hidden social costs that need to be paid are difficult to measure simply in terms of money.
"That's what it's for!" Director Li clapped his hands and continued, "The department held a meeting a few days ago to discuss this issue, but we really lack experts in this field, and we couldn't come up with it even after a long discussion. That’s why…”
Although these are commonplace things, Director Li has heard many people tell him similar things before, but this time it was said from Academician Lu's mouth, and the meaning was instantly different.
If further subdivided, quantum repeaters can also be subdivided into two propositions: "quantum memory" and "optimization of efficiency and storage time of quantum state writing and reading".
Lu Zhou nodded approvingly.
"Is this 'unconditionally secure' quantum communication difficult?"
If possible, the relevant departments would naturally hope to change the encryption algorithm so that they can control it for a little longer.
"Didn't you say some time ago that after your carbon-based topological quantum processor chip comes out, it won't be long before the quantum computer can break through 1,000 qubits?"
However, since there is basically no major progress in the field of quantum memory, quantum communication can only be realized within a distance of less than 100 kilometers, and the requirements for the transmission environment are extremely demanding. And this also lost its practical value, and it was even doubted that it could be realized.
Silence fell in the office.
"Quantum encryption algorithms are always temporary. n qubits correspond to 2^n states, not 2 times n. In theory, if we just linearly increase the difficulty of the proposition, one day our encryption methods will There is no way we can keep up with the speed of our information technology development.”
Don't update the encryption algorithm every three to five years. No matter how tenacious China's financial industry, communications industry, and Internet industry are, they will not be able to withstand such a torment...
Changing the encryption algorithm is not a trivial matter like changing the Penguin password. It involves the reform of the entire communication field, and the hidden social costs that need to be paid are difficult to measure simply in terms of money.
Don't update the encryption algorithm every three to five years. No matter how tenacious China's financial industry, communications industry, and Internet industry are, they will not be able to withstand such a torment...
Don't update the encryption algorithm every three to five years. No matter how tenacious China's financial industry, communications industry, and Internet industry are, they will not be able to withstand such a torment...
"Quantum encryption algorithms are always temporary. n qubits correspond to 2^n states, not 2 times n. In theory, if we just linearly increase the difficulty of the proposition, one day our encryption methods will There is no way we can keep up with the speed of our information technology development.”
In order to control the last link of the mission chain of Earth and Moon, there are still a lot of things waiting for him to complete.
"Quantum encryption algorithms are always temporary. n qubits correspond to 2^n states, not 2 times n. In theory, if we just linearly increase the difficulty of the proposition, one day our encryption methods will There is no way we can keep up with the speed of our information technology development.”
"Your worries are not unreasonable," Lu Zhou tapped his index finger on the table. After thinking for a moment, he said, "But it's really hard to say. I can only tell you that the bottleneck of 1,000 qubits is It can break through in a short time, but 2,000 qubits... I have to wait until at least 1,000 qubits break through before I can give you an accurate estimate."
If possible, the relevant departments would naturally hope to change the encryption algorithm so that they can control it for a little longer.
Silence fell in the office.
Director Li was confused: "Isn't it possible that it won't even work?"
"Uh, no..."
"Quantum repeater?"
These two major technical difficulties are exactly mentioned in the DLCZ plan, which uses the combination of quantum memory and single-photon channels to suppress attenuation to achieve long-distance quantum communication.
"It's not a question of whether the estimate will work or not, but it's meaningless at all," Lu Zhou sighed. "If you just want some psychological comfort, you might as well ask a fortune teller. From the perspective of probability, it's 50-50. And …”
The reason why quantum communication can be kept absolutely confidential is because of the special characteristics of the wave function. Once the photons transmitting the information are intercepted, any observation behavior will lead to the collapse of the entangled state.
"Please come in."
However, just when he was about to speak, Director Li couldn't help but take the lead.
Although these are commonplace things, Director Li has heard many people tell him similar things before, but this time it was said from Academician Lu's mouth, and the meaning was instantly different.
Lu Zhou picked up the water glass on the table and took a sip, moistening the mulberry seeds, preparing to comfort his old friend and tell him not to be too anxious. That set of encryption algorithms can be used first. When the 2000-qubit computer comes out, there may be new progress in the research of quantum repeaters.
However, it is inevitable that individuals generally have such concerns.
"Stop it, there's no need to explain the cause and effect to me," Lu Zhou raised his hand, stopped Director Li's words, sighed and said, "... Just tell me what trouble you have."
Lu Zhou picked up the water glass on the table and took a sip, moistening the mulberry seeds, preparing to comfort his old friend and tell him not to be too anxious. That set of encryption algorithms can be used first. When the 2000-qubit computer comes out, there may be new progress in the research of quantum repeaters.
After a pause, Lu Zhou continued.
"It's not a question of whether the estimate will work or not, but it's meaningless at all," Lu Zhou sighed. "If you just want some psychological comfort, you might as well ask a fortune teller. From the perspective of probability, it's 50-50. And …”
"Is this 'unconditionally secure' quantum communication difficult?"
Lu Zhou gave him a strange look.
"It's not really a troublesome thing. I just want to ask for your opinion." Director Li smiled sheepishly and asked, "... When will this 2000-qubit computer be available?"
Lu Zhou picked up the water glass on the table and took a sip, moistening the mulberry seeds, preparing to comfort his old friend and tell him not to be too anxious. That set of encryption algorithms can be used first. When the 2000-qubit computer comes out, there may be new progress in the research of quantum repeaters.
After chewing Lu Zhou's words over and over again, Director Li pondered for a long time, and then he asked seriously after a while.
"Well," Lu Zhou nodded as he looked at the thoughtful Director Li, "It's not that there is little progress in this area, but that there is no progress at all. This is the same all over the world..."
"Quantum encryption algorithms are always temporary. n qubits correspond to 2^n states, not 2 times n. In theory, if we just linearly increase the difficulty of the proposition, one day our encryption methods will There is no way we can keep up with the speed of our information technology development.”
Lu Zhou thought for a while and nodded.
Now that we’ve had enough wine and food, it’s time to do something.
Lu Zhou nodded seriously.
"Put aside the parts that you don't understand even if I talk about it, you just need to know that this thing is basically the core bottleneck limiting the commercialization of quantum communication technology."
The reason why quantum communication can be kept absolutely confidential is because of the special characteristics of the wave function. Once the photons transmitting the information are intercepted, any observation behavior will lead to the collapse of the entangled state.
However, just as he was about to get up from his desk, there was a sudden knock on the door outside the office.
Changing the encryption algorithm is not a trivial matter like changing the Penguin password. It involves the reform of the entire communication field, and the hidden social costs that need to be paid are difficult to measure simply in terms of money.
Thinking of the appointment made on the phone yesterday, Lu Zhou probably guessed who it was. He threw the tissue into the packing box, tied the plastic bag tightly and put it aside, cleared his throat and said.
Silence fell in the office.
To put it more simply, if there is a third party C standing in the middle of the phone call between A and B, eavesdropping. No matter what method C adopts, whether using a bug or putting his ear against the wall, as long as C hears a word, A and B will immediately know that the communication has been eavesdropped, and the entire message will lose its meaning.
After a pause, Lu Zhou continued.
Lu Zhou thought for a while and nodded.
The reason why quantum communication can be kept absolutely confidential is because of the special characteristics of the wave function. Once the photons transmitting the information are intercepted, any observation behavior will lead to the collapse of the entangled state.
"It's about the quantum encryption algorithm."
However, since there is basically no major progress in the field of quantum memory, quantum communication can only be realized within a distance of less than 100 kilometers, and the requirements for the transmission environment are extremely demanding. And this also lost its practical value, and it was even doubted that it could be realized.
Director Li's expression was a little solemn.
After chewing Lu Zhou's words over and over again, Director Li pondered for a long time, and then he asked seriously after a while.
Wang Peng nodded, picked up the packing box and exited the office with understanding, and closed the door behind him.
However, it is inevitable that individuals generally have such concerns.
"To be honest, it's not just difficult! It's quite difficult!"
To put it more simply, if there is a third party C standing in the middle of the phone call between A and B, eavesdropping. No matter what method C adopts, whether using a bug or putting his ear against the wall, as long as C hears a word, A and B will immediately know that the communication has been eavesdropped, and the entire message will lose its meaning.
"... Then, can you handle that quantum repeater?"
"It's about the quantum encryption algorithm."
"It's not really a troublesome thing. I just want to ask for your opinion." Director Li smiled sheepishly and asked, "... When will this 2000-qubit computer be available?"
"Quantum encryption algorithms are always temporary. n qubits correspond to 2^n states, not 2 times n. In theory, if we just linearly increase the difficulty of the proposition, one day our encryption methods will There is no way we can keep up with the speed of our information technology development.”
"Then what do you think we should do?"
"Please come in."
Wang Peng nodded, picked up the packing box and exited the office with understanding, and closed the door behind him.
"This problem can only be solved fundamentally," Lu Zhou thought for a while and then said, "In other words, we can eliminate the possibility of leaking secrets through communication methods!"
"If not, let's get down to business. I have to go back to the Institute for Advanced Study at around three in the afternoon for a meeting about the work of the Lunar Orbit Construction Committee." After looking at the time on his watch, Lu Zhou looked at Director Li Continued, "What exactly were you talking about to me on the phone yesterday?"
"You mean... quantum communication?"
Although these are commonplace things, Director Li has heard many people tell him similar things before, but this time it was said from Academician Lu's mouth, and the meaning was instantly different.
All encryption algorithms, including asymmetric encryption algorithms, target traditional communication methods. In the face of quantum communication technology, encryption is simply redundant.
Lu Zhou thought for a while and nodded.
The office was quiet again.
"Exactly."
"You mean... quantum communication?"
"...Since it's so useful, why do you come to me?"
Director Li was confused: "Isn't it possible that it won't even work?"
This time the silence lasted a little longer.
Thinking of the appointment made on the phone yesterday, Lu Zhou probably guessed who it was. He threw the tissue into the packing box, tied the plastic bag tightly and put it aside, cleared his throat and said.
Director Li said with a smile.
Lu Zhou nodded approvingly.
After chewing Lu Zhou's words over and over again, Director Li pondered for a long time, and then he asked seriously after a while.
There were only two people left in the office.
However, since there is basically no major progress in the field of quantum memory, quantum communication can only be realized within a distance of less than 100 kilometers, and the requirements for the transmission environment are extremely demanding. And this also lost its practical value, and it was even doubted that it could be realized.
However, it is inevitable that individuals generally have such concerns.
"Then what do you think we should do?"
"It's easy to use! It's so easy to use." Director Li clapped his hands and said with a smile, "You don't know, our deputy director of the Institute of Information Engineering of the Chinese Academy of Sciences was so surprised that he almost lost his mind after seeing it. My chin hit the ground..."
"Exactly."
"Your worries are not unreasonable," Lu Zhou tapped his index finger on the table. After thinking for a moment, he said, "But it's really hard to say. I can only tell you that the bottleneck of 1,000 qubits is It can break through in a short time, but 2,000 qubits... I have to wait until at least 1,000 qubits break through before I can give you an accurate estimate."
Thinking of the appointment made on the phone yesterday, Lu Zhou probably guessed who it was. He threw the tissue into the packing box, tied the plastic bag tightly and put it aside, cleared his throat and said.
"Didn't you say some time ago that after your carbon-based topological quantum processor chip comes out, it won't be long before the quantum computer can break through 1,000 qubits?"
"Uh, no..."
After listening to Lu Zhou's explanation, his heart suddenly felt hot and he quickly asked.
Director Li's expression was a little solemn.
If the bottleneck from 80 to 500 is so easy to break through, it is difficult to say how long the technical barriers from 500 to 1000, and from 1000 to 2000 can be maintained.
Director Li's expression was a little solemn.
These two major technical difficulties are exactly mentioned in the DLCZ plan, which uses the combination of quantum memory and single-photon channels to suppress attenuation to achieve long-distance quantum communication.
However, just as he was about to get up from his desk, there was a sudden knock on the door outside the office.
"Stop it, there's no need to explain the cause and effect to me," Lu Zhou raised his hand, stopped Director Li's words, sighed and said, "... Just tell me what trouble you have."
The reason why quantum communication can be kept absolutely confidential is because of the special characteristics of the wave function. Once the photons transmitting the information are intercepted, any observation behavior will lead to the collapse of the entangled state.
"... But I heard that quantum communication technology is not simple, right? Our country is relatively ahead in this area, and there are many achievements, but I have never seen the signs of this technology becoming mature."
After a pause, Lu Zhou continued.
If the bottleneck from 80 to 500 is so easy to break through, it is difficult to say how long the technical barriers from 500 to 1000, and from 1000 to 2000 can be maintained.
"This problem can only be solved fundamentally," Lu Zhou thought for a while and then said, "In other words, we can eliminate the possibility of leaking secrets through communication methods!"
Director Li was confused: "Isn't it possible that it won't even work?"
"It's normal not to see the signs of this," Lu Zhou said, "because current breakthroughs in this field are mainly focused on achieving photon entanglement and enhancing signal strength. But if we want to truly realize quantum communication, the key lies in quantum repeaters. superior."
To put it more simply, if there is a third party C standing in the middle of the phone call between A and B, eavesdropping. No matter what method C adopts, whether using a bug or putting his ear against the wall, as long as C hears a word, A and B will immediately know that the communication has been eavesdropped, and the entire message will lose its meaning.
Director Li's expression was a little solemn.
"Two meat and one vegetable, is there any problem?"
"This problem can only be solved fundamentally," Lu Zhou thought for a while and then said, "In other words, we can eliminate the possibility of leaking secrets through communication methods!"
Lu Zhou nodded seriously.
If further subdivided, quantum repeaters can also be subdivided into two propositions: "quantum memory" and "optimization of efficiency and storage time of quantum state writing and reading".
"...You're going to eat this for lunch?"
Lu Zhou always had a bad feeling when he saw this guy describing it with joy.
"This problem can only be solved fundamentally," Lu Zhou thought for a while and then said, "In other words, we can eliminate the possibility of leaking secrets through communication methods!"
"It's about the quantum encryption algorithm."
Don't update the encryption algorithm every three to five years. No matter how tenacious China's financial industry, communications industry, and Internet industry are, they will not be able to withstand such a torment...
These two major technical difficulties are exactly mentioned in the DLCZ plan, which uses the combination of quantum memory and single-photon channels to suppress attenuation to achieve long-distance quantum communication.
These two major technical difficulties are exactly mentioned in the DLCZ plan, which uses the combination of quantum memory and single-photon channels to suppress attenuation to achieve long-distance quantum communication.
"It's about the quantum encryption algorithm."
After listening to Lu Zhou's explanation, his heart suddenly felt hot and he quickly asked.
"It's not really a troublesome thing. I just want to ask for your opinion." Director Li smiled sheepishly and asked, "... When will this 2000-qubit computer be available?"
After a pause, Lu Zhou continued.
However, since there is basically no major progress in the field of quantum memory, quantum communication can only be realized within a distance of less than 100 kilometers, and the requirements for the transmission environment are extremely demanding. And this also lost its practical value, and it was even doubted that it could be realized.
However, it is inevitable that individuals generally have such concerns.
"Is this 'unconditionally secure' quantum communication difficult?"
"...You're going to eat this for lunch?"
"To be honest, it's not just difficult! It's quite difficult!"
Lu Zhou nodded approvingly.
The birth of any new technology takes time to settle. Although the quantum encryption algorithm he developed is not something particularly brilliant in his own opinion, there is still no problem in making do with it for a while.
"Quantum repeater?"
"... Then, can you handle that quantum repeater?"
In order to control the last link of the mission chain of Earth and Moon, there are still a lot of things waiting for him to complete.
"Uh, no..."
"To be honest, it's not just difficult! It's quite difficult!"
"Well," Lu Zhou nodded as he looked at the thoughtful Director Li, "It's not that there is little progress in this area, but that there is no progress at all. This is the same all over the world..."
"To be honest, it's not just difficult! It's quite difficult!"
"Didn't you say some time ago that after your carbon-based topological quantum processor chip comes out, it won't be long before the quantum computer can break through 1,000 qubits?"
"Well," Lu Zhou nodded as he looked at the thoughtful Director Li, "It's not that there is little progress in this area, but that there is no progress at all. This is the same all over the world..."
"... But I heard that quantum communication technology is not simple, right? Our country is relatively ahead in this area, and there are many achievements, but I have never seen the signs of this technology becoming mature."
The birth of any new technology takes time to settle. Although the quantum encryption algorithm he developed is not something particularly brilliant in his own opinion, there is still no problem in making do with it for a while.
Every time the old man courted him, he either wanted to introduce someone to him or wanted to trouble him with something.
Wang Peng nodded, picked up the packing box and exited the office with understanding, and closed the door behind him.
However, since there is basically no major progress in the field of quantum memory, quantum communication can only be realized within a distance of less than 100 kilometers, and the requirements for the transmission environment are extremely demanding. And this also lost its practical value, and it was even doubted that it could be realized.
This time the silence lasted a little longer.
The reason why quantum communication can be kept absolutely confidential is because of the special characteristics of the wave function. Once the photons transmitting the information are intercepted, any observation behavior will lead to the collapse of the entangled state.
However, since there is basically no major progress in the field of quantum memory, quantum communication can only be realized within a distance of less than 100 kilometers, and the requirements for the transmission environment are extremely demanding. And this also lost its practical value, and it was even doubted that it could be realized.
"It's not really a troublesome thing. I just want to ask for your opinion." Director Li smiled sheepishly and asked, "... When will this 2000-qubit computer be available?"
The reason why quantum communication can be kept absolutely confidential is because of the special characteristics of the wave function. Once the photons transmitting the information are intercepted, any observation behavior will lead to the collapse of the entangled state.
To put it more simply, if there is a third party C standing in the middle of the phone call between A and B, eavesdropping. No matter what method C adopts, whether using a bug or putting his ear against the wall, as long as C hears a word, A and B will immediately know that the communication has been eavesdropped, and the entire message will lose its meaning.
"Didn't you say some time ago that after your carbon-based topological quantum processor chip comes out, it won't be long before the quantum computer can break through 1,000 qubits?"
Director Li said with a smile.
The door of the office opened, and Director Li's familiar and unsurprising face appeared at the door. When he saw the packing box placed next to the table, he was about to say hello with a smile, and couldn't help but smile. Surprised expression.
Changing the encryption algorithm is not a trivial matter like changing the Penguin password. It involves the reform of the entire communication field, and the hidden social costs that need to be paid are difficult to measure simply in terms of money.
All encryption algorithms, including asymmetric encryption algorithms, target traditional communication methods. In the face of quantum communication technology, encryption is simply redundant.
"...Since it's so useful, why do you come to me?"
In order to control the last link of the mission chain of Earth and Moon, there are still a lot of things waiting for him to complete.
"It's not a question of whether the estimate will work or not, but it's meaningless at all," Lu Zhou sighed. "If you just want some psychological comfort, you might as well ask a fortune teller. From the perspective of probability, it's 50-50. And …”
This is the so-called "unconditional security"!
If further subdivided, quantum repeaters can also be subdivided into two propositions: "quantum memory" and "optimization of efficiency and storage time of quantum state writing and reading".
The office was quiet again.
It took about five minutes for Lu Zhou to briefly explain the technical difficulties of quantum communication and its advantages over traditional communication methods to Director Li.
There were only two people left in the office.
In order to control the last link of the mission chain of Earth and Moon, there are still a lot of things waiting for him to complete.
After listening to Lu Zhou's explanation, his heart suddenly felt hot and he quickly asked.
"...You're going to eat this for lunch?"
As soon as he heard Director Li's words, Lu Zhou immediately understood what he was thinking. He had been worried about the timeliness of the technology for a long time.
It took about five minutes for Lu Zhou to briefly explain the technical difficulties of quantum communication and its advantages over traditional communication methods to Director Li.
"Then what do you think we should do?"
Although these are commonplace things, Director Li has heard many people tell him similar things before, but this time it was said from Academician Lu's mouth, and the meaning was instantly different.
"Quantum encryption algorithms are always temporary. n qubits correspond to 2^n states, not 2 times n. In theory, if we just linearly increase the difficulty of the proposition, one day our encryption methods will There is no way we can keep up with the speed of our information technology development.”
"Quantum repeater?"
Lu Zhou always had a bad feeling when he saw this guy describing it with joy.
After listening to Lu Zhou's explanation, his heart suddenly felt hot and he quickly asked.
After listening to Lu Zhou's explanation, his heart suddenly felt hot and he quickly asked.
After a pause, Lu Zhou continued.
After a pause, Lu Zhou continued.
The birth of any new technology takes time to settle. Although the quantum encryption algorithm he developed is not something particularly brilliant in his own opinion, there is still no problem in making do with it for a while.
"It's not a question of whether the estimate will work or not, but it's meaningless at all," Lu Zhou sighed. "If you just want some psychological comfort, you might as well ask a fortune teller. From the perspective of probability, it's 50-50. And …”
"It's about the quantum encryption algorithm."
"Quantum encryption algorithms are always temporary. n qubits correspond to 2^n states, not 2 times n. In theory, if we just linearly increase the difficulty of the proposition, one day our encryption methods will There is no way we can keep up with the speed of our information technology development.”
However, just as he was about to get up from his desk, there was a sudden knock on the door outside the office.
"Is this 'unconditionally secure' quantum communication difficult?"
Lu Zhou thought for a while and nodded.
Every time the old man courted him, he either wanted to introduce someone to him or wanted to trouble him with something.
Lu Zhou nodded seriously.
Lu Zhou gave him a strange look.
"Uh, no..."
Lu Zhou picked up the water glass on the table and took a sip, moistening the mulberry seeds, preparing to comfort his old friend and tell him not to be too anxious. That set of encryption algorithms can be used first. When the 2000-qubit computer comes out, there may be new progress in the research of quantum repeaters.
However, just when he was about to speak, Director Li couldn't help but take the lead.
"If not, let's get down to business. I have to go back to the Institute for Advanced Study at around three in the afternoon for a meeting about the work of the Lunar Orbit Construction Committee." After looking at the time on his watch, Lu Zhou looked at Director Li Continued, "What exactly were you talking about to me on the phone yesterday?"
"To be honest, it's not just difficult! It's quite difficult!"
"If not, let's get down to business. I have to go back to the Institute for Advanced Study at around three in the afternoon for a meeting about the work of the Lunar Orbit Construction Committee." After looking at the time on his watch, Lu Zhou looked at Director Li Continued, "What exactly were you talking about to me on the phone yesterday?"
"...Since it's so useful, why do you come to me?"
"Put aside the parts that you don't understand even if I talk about it, you just need to know that this thing is basically the core bottleneck limiting the commercialization of quantum communication technology."
"To be honest, it's not just difficult! It's quite difficult!"
"... Then, can you handle that quantum repeater?"
To put it more simply, if there is a third party C standing in the middle of the phone call between A and B, eavesdropping. No matter what method C adopts, whether using a bug or putting his ear against the wall, as long as C hears a word, A and B will immediately know that the communication has been eavesdropped, and the entire message will lose its meaning.
Seeing that there was no one else around, Director Li finally spoke.
Director Li said nothing and glanced at Wang Peng.
The birth of any new technology takes time to settle. Although the quantum encryption algorithm he developed is not something particularly brilliant in his own opinion, there is still no problem in making do with it for a while.
Wang Peng nodded, picked up the packing box and exited the office with understanding, and closed the door behind him.
Although these are commonplace things, Director Li has heard many people tell him similar things before, but this time it was said from Academician Lu's mouth, and the meaning was instantly different.
The office was quiet again.
Lu Zhou: "..."
"... But I heard that quantum communication technology is not simple, right? Our country is relatively ahead in this area, and there are many achievements, but I have never seen the signs of this technology becoming mature."
To put it more simply, if there is a third party C standing in the middle of the phone call between A and B, eavesdropping. No matter what method C adopts, whether using a bug or putting his ear against the wall, as long as C hears a word, A and B will immediately know that the communication has been eavesdropped, and the entire message will lose its meaning.
There were only two people left in the office.
"It's not really a troublesome thing. I just want to ask for your opinion." Director Li smiled sheepishly and asked, "... When will this 2000-qubit computer be available?"
"Quantum repeater?"
"This problem can only be solved fundamentally," Lu Zhou thought for a while and then said, "In other words, we can eliminate the possibility of leaking secrets through communication methods!"
"It's not a question of whether the estimate will work or not, but it's meaningless at all," Lu Zhou sighed. "If you just want some psychological comfort, you might as well ask a fortune teller. From the perspective of probability, it's 50-50. And …”
This time the silence lasted a little longer.
After chewing Lu Zhou's words over and over again, Director Li pondered for a long time, and then he asked seriously after a while.
There were only two people left in the office.
The door of the office opened, and Director Li's familiar and unsurprising face appeared at the door. When he saw the packing box placed next to the table, he was about to say hello with a smile, and couldn't help but smile. Surprised expression.
Lu Zhou nodded seriously.
"Your worries are not unreasonable," Lu Zhou tapped his index finger on the table. After thinking for a moment, he said, "But it's really hard to say. I can only tell you that the bottleneck of 1,000 qubits is It can break through in a short time, but 2,000 qubits... I have to wait until at least 1,000 qubits break through before I can give you an accurate estimate."
After listening to Lu Zhou's explanation, his heart suddenly felt hot and he quickly asked.
Lu Zhou picked up the water glass on the table and took a sip, moistening the mulberry seeds, preparing to comfort his old friend and tell him not to be too anxious. That set of encryption algorithms can be used first. When the 2000-qubit computer comes out, there may be new progress in the research of quantum repeaters.
Lu Zhou picked up the water glass on the table and took a sip, moistening the mulberry seeds, preparing to comfort his old friend and tell him not to be too anxious. That set of encryption algorithms can be used first. When the 2000-qubit computer comes out, there may be new progress in the research of quantum repeaters.
"easy to use?"
"Well," Lu Zhou nodded as he looked at the thoughtful Director Li, "It's not that there is little progress in this area, but that there is no progress at all. This is the same all over the world..."
The birth of any new technology takes time to settle. Although the quantum encryption algorithm he developed is not something particularly brilliant in his own opinion, there is still no problem in making do with it for a while.
Lu Zhou picked up the water glass on the table and took a sip, moistening the mulberry seeds, preparing to comfort his old friend and tell him not to be too anxious. That set of encryption algorithms can be used first. When the 2000-qubit computer comes out, there may be new progress in the research of quantum repeaters.
All encryption algorithms, including asymmetric encryption algorithms, target traditional communication methods. In the face of quantum communication technology, encryption is simply redundant.
Every time the old man courted him, he either wanted to introduce someone to him or wanted to trouble him with something.
The door of the office opened, and Director Li's familiar and unsurprising face appeared at the door. When he saw the packing box placed next to the table, he was about to say hello with a smile, and couldn't help but smile. Surprised expression.
Director Li said with a smile.
"It's not a question of whether the estimate will work or not, but it's meaningless at all," Lu Zhou sighed. "If you just want some psychological comfort, you might as well ask a fortune teller. From the perspective of probability, it's 50-50. And …”
However, just when he was about to speak, Director Li couldn't help but take the lead.
The reason why quantum communication can be kept absolutely confidential is because of the special characteristics of the wave function. Once the photons transmitting the information are intercepted, any observation behavior will lead to the collapse of the entangled state.
"You mean... quantum communication?"
"It's not really a troublesome thing. I just want to ask for your opinion." Director Li smiled sheepishly and asked, "... When will this 2000-qubit computer be available?"
Director Li said nothing and glanced at Wang Peng.
Changing the encryption algorithm is not a trivial matter like changing the Penguin password. It involves the reform of the entire communication field, and the hidden social costs that need to be paid are difficult to measure simply in terms of money.
Upon hearing this, Lu Zhou's eyebrows suddenly raised with interest and he asked.
However, it is inevitable that individuals generally have such concerns.
Now that we’ve had enough wine and food, it’s time to do something.
"... Then, can you handle that quantum repeater?"
If the bottleneck from 80 to 500 is so easy to break through, it is difficult to say how long the technical barriers from 500 to 1000, and from 1000 to 2000 can be maintained.
"Well," Lu Zhou nodded as he looked at the thoughtful Director Li, "It's not that there is little progress in this area, but that there is no progress at all. This is the same all over the world..."
"Quantum encryption algorithms are always temporary. n qubits correspond to 2^n states, not 2 times n. In theory, if we just linearly increase the difficulty of the proposition, one day our encryption methods will There is no way we can keep up with the speed of our information technology development.”
"Well," Lu Zhou nodded as he looked at the thoughtful Director Li, "It's not that there is little progress in this area, but that there is no progress at all. This is the same all over the world..."
Lu Zhou: "..."
These two major technical difficulties are exactly mentioned in the DLCZ plan, which uses the combination of quantum memory and single-photon channels to suppress attenuation to achieve long-distance quantum communication.
If further subdivided, quantum repeaters can also be subdivided into two propositions: "quantum memory" and "optimization of efficiency and storage time of quantum state writing and reading".
In order to control the last link of the mission chain of Earth and Moon, there are still a lot of things waiting for him to complete.