Chapter 59: Zhao Weijia’s Dilemma
Gradually, Xu You went from being a bystander at the beginning to helping Zhao Weijia with some simpler tasks.
After all, it has always been an unspoken rule in university laboratories that seniors order juniors around.
Xu You was very happy to participate in some work personally.
Now, I can finally have access to these devices with a legitimate reason.
A few days later.
After producing a new batch of experimental data, Zhao Weijia was not very satisfied with the results.
"No, it is still difficult to obtain the maximum entangled state of high-dimensional OAM."
This is actually a very difficult problem that has been bothering Zhao Weijia for a long time.
Zhao Weijia attaches great importance to this topic.
It can be said that as long as ideal results are achieved and the paper is published successfully.
Zhao Weijia basically meets the requirements for graduating with a doctorate.
But sometimes , scientific research is full of twists and turns.
No one knows whether a path will work.
It is also impossible to determine how many experiments are needed to obtain the ideal results.
"If this continues, I'm afraid I won't be able to graduate next year."
I think of my classmates who started working right after college and have now bought houses and cars, and have married and had children.
Zhao Weijia couldn't help but doubt his decision to pursue graduate studies.
In the midst of his dilemma, Zhao Weijia even thought about changing his subject.
But in fact, Zhao Weijia's current project has progressed more than halfway, and only lacks some key data.
If you change the topic at this time , all the previous work will be wasted.
Moreover, if you change the topic, the new topic may not be easy to do.
After thinking about it, Zhao Weijia decided to continue the experiment according to his previous ideas.
Maybe if we do it a few more times, we can get the maximum entangled state of high-dimensional OAM.
"Brother, did you still fail to obtain the maximum entangled state of high-dimensional OAM this time?"
"Yes, they are basically 3D and 4D." Zhao Wenjia said disappointedly.
In Zhao Weijia's experiment, it would be best to obtain some higher-dimensional entangled states.
Of course, quantum entangled states like those with more than 50 dimensions are a huge challenge worldwide.
As long as the maximum OAM entanglement of more than ten dimensions can be achieved, it will be a very good result.
These days, through continuous learning, Xu You has basically understood the scientific research project that Zhao Weijia is doing.
To put it simply, the project Zhao Weijia is working on is about the problem of "photon entanglement".
The so-called photon entanglement refers to two photons coming from the same light beam after they are separated.
You will find that what happens to one photon will also be reflected in the other photon.
This connection is so magical that it transcends space and time.
In addition to photons, other elementary particles also have such magical properties, collectively known as "quantum entanglement."
Photon entanglement is a type of quantum entanglement.
Through his understanding over the past few days, Xu You also roughly understood why Zhao Weijia's project encountered such a dilemma.
"Brother, is it because forced filtering causes a large energy loss, so it is difficult to obtain a high-dimensional OAM maximum entangled state?"
Zhao Weijia was stunned when he heard this, but he didn't show too much surprise.
After spending these days with Xu You, Zhao Weijia already knew that Xu You's learning ability was incredible.
Even when he first entered the laboratory, Xu You only had a little theoretical knowledge and did not understand the more in-depth scientific research content.
But in just less than a month, Xu You made rapid progress.
Not only am I familiar with the functions of various equipment in the laboratory, I have also basically understood the content of my own research topic.
It is no exaggeration to say that Xu You is now more useful than many masters in laboratories.
"That's right. It's the forced filtering that causes excessive energy loss."
In fact, Zhao Weijia himself is also clear about this reason.
But finding the cause does not mean the problem is solved.
Because, in order to obtain the maximum entangled state, the commonly used method is toe cutting.
To cut off the toe, it is necessary to use the forced filtering method.
It can be said that this problem is a vicious circle.
Unless other methods are found to obtain the maximum entangled state.
Otherwise, the problem cannot be solved.
We can only conduct experiments many times to see if we can get lucky and obtain the high-dimensional OAM maximum entangled state.
Xu You also knew that the key now was to find a way to reduce energy loss so that it would be easier to obtain a higher-dimensional maximum entangled state.
There is not much meaning in blindly repeating experiments.
After identifying the problem, Xu You decided to try to solve it.
Carrying various materials, Xu You returned to the dormitory and entered a state of deep learning.
Xu You's current level of intelligence and physics has improved to a certain extent compared to the end of CPhO.
"As long as the weight factor am is controlled within a certain range, it is possible to better control energy loss."
Next, Xu You began to frantically derive various formulas according to this idea.
Sheet after sheet of paper was filled with Xu You's writing.
There were traces of erasures all over the rough papers where the writing had been done.
This feeling is completely different from when I normally do questions.
Even the most difficult exam questions have standard answers.
But Xu You’s problem, even the problem itself, may not have a solution.
Xu You could only try his best to solve this problem.
After writing on countless sheets of paper, Xu You suddenly looked happy.
“There is hope!”
According to Xu You's plan, if the weight factor can be successfully controlled within a certain range, it is theoretically possible to achieve the maximum entangled state of more than 10 dimensions.
Moreover, such a weighting factor can also be controlled by changing the beam waist of the pump light.
In his excitement, Xu You even wanted to find Zhao Weijia directly to explain his idea.
But after all, it was too late today, so Xu You decided not to disturb Zhao Weijia.
After all, Xu You couldn't be sure that his deduction process was completely correct.
Even if the theory is correct, it does not mean that it can be perfectly achieved in actual experiments.
Xu You had to try hard to control his excitement and wait until the next day to talk to Zhao Weijia about this matter.
At 8 o'clock the next morning, Xu You went directly to Wang Xiangwu's laboratory.
As usual, Zhao Weijia was more than ten minutes late when he arrived.
I have gotten used to the monotonous life in the laboratory. It is good enough to come to the laboratory every day. The requirement of not being late is too high.
Anyway, there is no teacher to supervise you, everything depends on your own initiative.
"Xu You, you came so early today?"
"Brother, please open the door. I want to discuss a plan with you."
"Discuss the plan?" Zhao Weijia couldn't help but laugh.
Zhao Weijia thought, could it be that Xu You, a high school student, really wants to try to help him solve scientific research problems?
