Into Unscientific Chapter 357

  Chapter 357 Unexpected direction

   Double-slit interference the next morning.

"what?"

  In the synchrotron radiation office of HKUST.

   Academician Pan, who was snoring a bowl of Taihe Pan Mee, took a sip, swallowed half of the noodles quickly, and asked Xu Yun in front of him while chewing with puffed cheeks:

   "Xiao Xu, you said that you want to subcontract some research projects on isolated point particles?"

  Xu Yun nodded, and handed over the sketch he had prepared:

   "Well, look at this."

   Mentioned earlier.

   Xu Yun's idea is actually very simple:

  Relying on the feature of no static mass of lone point particles to replace the rubidium atoms of the ultrcold chain, so as to achieve a higher precision measurement feedback effect.

  So Academician Pan only took a quick glance, and then understood all of Xu Yun's thoughts, and put it aside.

   tuk tuk tuk —

  I saw Academician Pan's index finger tapping rhythmically on the table, and his whole face was thoughtful.

   After a few seconds.

  He looked up at Xu Yun, thought it over and said:

   "Xiao Xu, judging from the blueprint, there is really no major problem with your thinking."

   "However, you should know that whether a project is approved or not cannot be determined by the word 'ideas'. It needs to be customized with more comprehensive and more feasible steps."

   "For example, let me ask you, how do you plan to make the solitary point particles form a quantum state?"

  Academician Pan's expression was serious, and he didn't intend to let Xu Yun go and take care of his disciples at all.

   Still take rubidium atom as an example.

The first time rubidium atoms obtained a Bose-Einstein condensate dates back to 1995, when Wolfgang Kately of the Massachusetts Institute of Technology and Eric Cornell of the University of Colorado Boulder established a condensate at 170nK. This achievement was achieved at low temperatures.

since then.

  Rubidium atoms have just been widely used in the laboratory on a large scale, and after 15 years, they successfully left the laboratory and appeared on the gravity gradient meter.

but

   Behind such a simple description, lies the sweat of countless predecessors and the extremely high difficulty of preparation.

  Rubidium atoms are like this, so are lone point particles.

  Lone point particles want to replace rubidium atoms in the position of the gravity gradiometer. To put it bluntly, Xu Yun must solve a most basic problem in order to make the lone point particles have the possibility to adapt to the gravity gradiometer:

  How to create a quantum state like a rubidium atom?

   If you can't do this step, then everything is empty talk.

  Academician Pan will never agree to Xu Yun's project.

   In other words.

  The question raised by Academician Pan can be regarded as an 'interview' to some extent.

   "Forming a quantum state?"

   After Xu Yun talked with Zhao Zhengguo about the idea of ​​establishing the project yesterday, he thought about the practical link at night.

  Although there are still many problems with no results, there are still some solutions to the threshold that must be crossed in the quantum state:

   "Teacher, this is what I think."

   "We can put a Zeeman reducer on the device, and make a resonant transition with the particle through a counter-propagating laser beam."

   "In this way, suitable isolated point particles can be preliminarily screened out, and its particle number distribution at each energy level can be determined."

   "Then according to the Bose statistical theory, after we know the distribution of the number of particles at each energy level, we can use the density of states to convert the sum into an integral to calculate the total number of particles."

   "And then there's orbital coupling."

   "At present, we have achieved some results in one-dimensional artificial spin-orbit coupling in China, so if we can complete the spin-orbit coupling of isolated ions in more than two dimensions, I think it should not be a problem to complete the quantum state."

  Academician Pan's frequency of tapping the table with his fingers gradually slowed down, and finally fell into deep thought.

   Mentioned earlier.

  The so-called Bose-Einstein condensate is to suddenly "condense" atoms in different states into the same ground state.

   And this ground state is actually a quantum state.

  Therefore, quite a lot of physical research on ultracold atoms belongs to the research field of quantum or Academician Pan.

  For example, the spin-orbit coupling mentioned by Xu Yun.

  Achieving artificial spin-orbit coupling in ultracold atoms and studying novel quantum states of matter is one of the most important frontier topics in ultracold atom physics.

   In 2016.

  USTC once cooperated with the theory group of Peking University to propose and construct a two-dimensional Raman coupled optical lattice, and realized a two-dimensional spin-orbit coupled topological quantum gas.

   Not long ago.

Professor Liu Xiongjun from the Center for Physical Quantities of Peking University, on the basis of the original two-dimensional system, proposed a new Raman optical lattice scheme of three-dimensional spin-orbit coupling and ideal Weyl semimetal, and published it on "Science" (doi: 10.1126/science.abc0105)

anyway.

  Academician Pan is still the corresponding author of that paper.

   So he knows

   The idea Xu Yun mentioned is indeed quite feasible.

  So he and Zhao Zhengguo looked at each other, and asked Xu Yun again:

   "Xiao Xu, how many subjects do you want to subcontract this time?"

  Xu Yun scratched his hair twice, lowered his eyelids, and thought about it and said:

   "Let's set up two topics, one is the ground state processing of isolated point particles, and the other is the application of the measurement module of isolated point particles."

   "In this way, even if I encounter the worst situation, I can at least ensure that the first project can be successfully completed, so that the entire army will not be wiped out."

   Zhao Zhengguo, who was listening, nodded slightly.

  Project subcontracting has always been a practice that is prone to criticism.

  Especially when the subcontractor is still his own student, various guesses, even assumptions and slanders within and outside the group will not be small.

  Although academician Pan and Zhao Zhengguo didn't care much about these criticisms.

  But if there is an opportunity to show their 'innocence', they will naturally not refuse.

  Now Xu Yun divides the project into two parts, the former is relatively easy, and the latter is more difficult.

Thus.

  Even if Xu Yun only broke through the first topic, he can still stop many people's mouths:

  The "simpleness" of the ground state processing of lone point particles is relatively speaking. If this technology can be realized, Xu Yun will be able to get mixed up in the journals of the second district of the Chinese Academy of Sciences.

  A master subcontracts a certain project, and the result is sent to the second district paper, even if it is put in the kingdom of light, it is a solid and excellent result.

  However, Academician Pan's face was still calm at this time, unable to see the joy and anger in his heart, but continued to ask:

   "What about the equipment and funding?"

  Xu Yun's expression turned serious.

  The main event is coming.

  I saw him slapping his chest heavily, with an expression of 'our company is rich':

   "Teacher, don't worry about the funds. You don't need to be approved first. We, Huadun Biotechnology, can pay for this part of the money ourselves."

   "In addition, if there are additional work losses or electricity expenses, we will also cover them all. If necessary, I can even pay from my personal account."

  However, after two seconds of arrogance, Xu Yun's eyes became faint:

   "As for the equipment, well. It may be more than a billion."

  Academician Pan didn't notice the abnormality in Xu Yun's words, so he continued:

   "Speak."

  Xu Yun hesitantly glanced at his teacher, and finally heaved his heart and said:

   "The Zeeman reducer is definitely necessary, and the magneto-optical trap is also indispensable."

   "In addition, non-chain DF laser P-polarized ArF excimer laser large-angle anti-reflection film is required. Colloidal PbSe quantum dots doped liquid core fiber.

   ".and MeV-UED Linseis CG790—or 680"

   After half a minute.

  Academician Pan glanced at Xu Yun who had closed his mouth again:

   "Finished?"

   "Well, that's about it."

  The muscles on Academician Pan's face twitched a few times, and there was a rare expression of speechlessness on his normally gentle face:

   "How about Xiao Xu, let me make a suggestion with the school to transfer the ownership of the Synchrotron Radiation Center to you? It will be done within three days!"

  Xu Yun subconsciously wanted to reply that holidays are not included, but considering that his tutor might clean up the door on the spot, he obediently lowered his head:

   "How about the teacher, I will leave the equipment to you to decide?"

"pass it to me?"

  Academician Pan sneered, and saw through Xu Yun's careful thinking of retreating:

   "Okay, how about I arrange a refrigerator for you?"

   "Anyway, it's all for cooling. The difference between minus 270 degrees and minus 2 degrees is two figures. I'll equip you with a diesel generator—I'll pay for it myself. How about it?"

  Xu Yun:

   Then Academician Pan snorted again, frowned and shook his head:

   "Hey, just talking to you makes my face go numb."

   "It doesn't matter, I won't tease you anymore, the equipment is reduced to 60% according to your needs, no problem?"

  Xu Yun, who drooped his head, was taken aback when he heard the words.

   Cut to 60%?

  Mom!

To know.

   Many of the equipment he just proposed are big guys who are listed in the national major scientific research equipment development projects!

  He was just talking casually with the idea of ​​whether there is a date or not. In fact, 30% of the candidates can be approved by Academician Pan, which is very good.

   After all, in terms of status, Academician Pan can only be regarded as the leader of domestic quantum encryption communication.

  Remove the word encryption, he may not be able to rank first.

  This is the case in the field of communication, let alone quantum physics or theoretical physics.

  So for Academician Pan.

   There is no problem in assigning project subcontractors, but it may not be so easy when it comes to the allocation of some instruments.

  This is the teacher.

   And just when Xu Yun was secretly moved, Academician Pan's voice came from his ear again:

   "Of course, Xiao Xu, given you such a big discount, shouldn't the burden on your shoulders be increased?"

  Xu Yun: ".?"

  Wait, what about the teacher-student love?

  Then without waiting for Xu Yun to answer, Academician Pan continued:

"Let's see it this way, Xiao Xu, the structure freeze-frame, potential barrier drawing, polaritons, Gaussian Bose sampling, and spatial coherence of isolated particles are also entrusted to you—of course, you will also use your results to get the results." How about your name?"

  Looking at Academician Pan with the expression of an old fox, Xu Yun's face broke out in cold sweat:

   "Teacher, don't you think highly of me?"

  Xu Yun's expression this time is not fake, he is really dumbfounded.

  Academician Pan's structural freeze and potential barrier drawing are okay to say, but the last three things starting from polaritons, this tmd is a bit outrageous

   Such as excitons.

  Exciton, conceptually refers to some quasi-particles abstracted from the original excitation.

   Most of the new quasiparticles produced by coupling will be named polaritons.

  For example, the phonon polaritons generated by the coupling of photons and phonons,

  Exciton polaritons generated by the coupling of photons and excitons,

  Surface plasmon polaritons generated by the coupling of photons and surface plasmons, etc.

  If a photon can really couple with an isolated point particle, then what it produces is an isolated point polariton.

  The concept is not difficult to understand, but in practice

   Let's put it this way.

   This is a research project at the academician level of the Academy of Sciences—or the kind that academicians personally end.

  The following Gaussian Bose sampling and spatial coherence are almost the same.

   As for Xu Yun's ability

   Mentioned earlier.

  After using Maverick's thinking role card.

  Xu Yun's ability has probably reached the level of professors of unpopular majors and associate professors of popular majors in 211 colleges.

   Now through the copy of wheat.

   Xu Yun barely raised himself to the level of an ordinary professor through Gauss' teaching and daily discussion with Mai Mai, Lao Tang and others.

   In addition, he still has some thinking card combinations that he has not used, and theoretically there is a certain room for improvement.

but

  Xu Yun can assure you.

  Even if all the thinking cards are used up, it is impossible for his ability to reach the level of an academician—except for someone like Xie from Tobacco.

   Therefore, it is really not modest, Xu Yun really has the urge to ask Academician Pan to hire someone else:

   "Teacher, how about."

   As a result, he was interrupted by Academician Pan with a smile before he finished speaking:

   "Xiao Xu, why are you in such a hurry? I didn't say that you should do this alone."

   "Don't forget, there is a talented person in this field in the University of Science and Technology who has nothing to do recently."

   "Capable person?"

  Xu Yun's face showed a trace of astonishment, and the words he originally wanted to refuse also got stuck in his throat.

   But soon.

  A flash of lightning flashed in his mind:

   "Teacher, you mean"

  Academician Pan nodded lightly:

   "That's right, it's Xiao Lu."

  (end of this chapter)

Chapter end