Old Shen asked, followed his gaze, and saw Xu Kaiqing was beeping on the machine with his meal card, then beeped a second time, and a third time...
Like a credit card machine with no emotions.
"Old Xu is planning to take undergraduates?"
Xie Dingyuan withdrew his gaze, "Teacher, I still have two projects in hand. I only want to borrow the laboratory this time when I go back to Q University, so I won't get involved in the information competition."
"Alright." Shen Wenzhao nodded, expressing his understanding: "Although there is only one question, it is a waste of energy."
"En." Xie Dingyuan lowered his head to eat, chewing every bite carefully.
With a calm and serious face and focused and indifferent eyes, it seems that what is placed in front of him is not a dinner plate, but a paper.
Old Shen: "..." Just get used to it.
On this side, the two sides are silent; on the other side, there are laughter and laughter.
"Grandpa, are you a teacher of Q University?"
Xu Kaiqing: "Yes." Director Bo said that there is nothing wrong with the teacher.
Gao Zhaoming: "Then what do you teach?"
Xu Kaiqing: "Physics."
"Wow! I like physics so much, I also want to take the exam in the physics department of Q University! When I pass the exam, I will come to listen to your class!"
Xu Kaiqing: "..." If he is free to go to undergraduate courses then.
Huang Hui: "The food here is delicious!"
When Fanye heard the words, she immediately raised her head, her eyes sparkling, rice grains stuck to the corner of her mouth: "Yes! It's delicious! Grandpa, did you and Sister Yue know each other before?"
Xu Kaiqing: "Of course!" How could you not know him? Must know!
After lunch, Huang Hui and others went back to the hotel first, and Jiang Fuyue was invited to Xu Kaiqing's laboratory.
The euphemistic name is: "Take a look, it's quite big."
The kindness is hard to give up, but Jiang Fuyue smelled a conspiracy.
Sure enough, as soon as the front foot stepped in, a stack of materials was forced into the back foot.
Xu Kaiqing rubbed his nose: "...Anyway, if you are idle, you are idle. Take a look at this."
Jiang Fuyue bowed her head and swept: "Optical Schrödinger's cat state?"
"Yeah." Xu Kaiqing nodded hastily.
"This is not the scope of quantum mechanics. When did you change to study this?"
"Cough... It's not me, it's a colleague's research topic, focusing on the filter design and the measurement method of the filter cavity length. I have seen it, and there is no problem in deriving it from a theoretical point of view, but in the actual operation process, the measurement results Not stable."
Jiang Fuyue raised her eyebrows: "So what are you doing for me?"
"... I think you should be able to see the problem."
Before Jiang Fuyue could open her mouth, a figure rushed in and snatched the paper from her hand: "Who are you? An important place for experiments, where no one else is allowed to enter, don't you know?!"
The person who came was an old man with gray hair, his face was full of wrinkles, his eyes were very hale and hearty, and the moment he looked at Jiang Fuyue, his sharpness suddenly appeared.
"Hey, old Shen, what are you doing?" Xu Kaiqing quickly pulled him aside.
Shen Wenzhao's old eyes stared fiercely: "Why are you asking me? I also want to ask what are you doing? You bring people to the laboratory casually, and you think it's your family who opened it? Also, what are you doing with my thesis? Cat disease!"
The corner of Xu Kaiqing's mouth twitched: "Didn't you give it to me?"
"I gave it to you to help you see what the problem is, not to pass it on to the exhibition."
Everyone only knows that Shen Wenzhao is a bigwig in the field of biology, but they don't know that he has made a lot of achievements in the field of physics, but he is not as proficient as Xu Kaiqing.
That's why I gave him the research paper, and asked old man Xu to read it for him, but who knows...
Xu Kaiqing expressed his injustice: "Aren't I just helping you find a problem?"
"That's it?" Shen Wenzhao lingered between him and Jiang Fuyue with 120,000 suspicious eyes.
"That's right! I didn't find it, so I asked someone to find it for you. Is it wrong?" Xu Kaiqing resisted the urge to roll his eyes.
What a great opportunity, he didn't show "Sorrow" his own project, so he kept close to him first, and the result
As soon as he came in, he went crazy, and his voice was quite loud.
Shen Wenzhao: "Who did you invite?"
"Her!" Xu Kaiqing looked at Jiang Fuyue with a natural look on his face.
Shen Wenzhao's eyes turned dark immediately, and he was too angry to speak: "You—"
Xu Kaiqing: "?" What's wrong with me
"You, actually let an undergraduate student read my thesis, and still want to ask me questions?"
"no… "
"I saw it with my own eyes, and you still argue?" Shen Wenzhao looked at him like he was looking at a heartless man, full of accusations.
Well!
Xu Kaiqing said quietly: "I'm not quibbling, I just want to correct, she is not an undergraduate student..."
Shen Wenzhao: "?"
Xu Kaiqing continued: "She is studying in high school."
"?!"
Shen Wenzhao was almost dizzy: "Her? You can figure it out!"
"Believe it or not, she knows what I know, and she knows what I don't know."
"Tch—Old Xu, this joke is not funny at all! A high school student, does she know what Schrödinger's cat state is? Do you know what filter cavity and compressed state are? How dare you show her my thesis?"
Jiang Fuyue: "The optical Schrödinger cat state is one of the main research objects of the basic problems of quantum mechanics, and it is also an important resource of continuous variable quantum information. In its experimental preparation, the filtering operation of the trigger optical path is to determine the purity and yield of the cat state. The key link of important parameters such as rate.[1]”
Shen Wenzhao was taken aback. These are basic knowledge, not difficult, he is not surprised at all by undergraduate students, but he was a little confused when he heard it from a high school student.
And Xu Kaiqing had crossed his arms long ago, hugging his chest, as if he was watching a play.
"I took a look at the paper just now, and I am not clear about other parts, but there is indeed a problem with one point."
Xu Kaiqing's eyes lit up: "What's the problem?" He didn't find it.
Shen Wenzhao was obviously still in a daze.
Jiang Fuyue: "According to the design requirements, the cavity length L should be less than 189 μm, but it must be greater than 119 μm. The interval is too short to be measured by conventional methods, and the cavity length can only be satisfied by measuring the Gouy phase shift of the high-order transverse mode. The design requirement should be 141 μm without exception. This method does not depend on the characteristics of any medium in the cavity, only in this way can it be universally representative.[1]”
"Old Shen, do you understand?" Xu Kaiqing hummed.
Only then did Shen Wenzhao come to his senses, and quickly opened the paper in his hand, found the page on cavity length measurement, and took a closer look, "141? How did you get it? Let me think about it..."
Jiang Fuyue cast a warning look at Xu Kaiqing: There will be no next time!
Xu Kaiqing touched his nose guiltily.
She said, "Let's go."
"I'll send you off!"
"No." After saying that, he turned and left.
In the next second, the footsteps stopped, and Xie Dingyuan stood not far away, wearing a white lab coat. I don't know how long he watched and heard.
His face was expressionless, his eyes were deep and deep, and he was meticulous from head to toe.
Dust is not like a mortal.
Jiang Fuyue's eyes flickered, she quickly looked away, and then passed him by.
Unexpectedly, as soon as he left the laboratory, the man chased after him...