Chapter 235 Today's young people are really fierce To be more specific, he has the aura of a calm and confident boss, speaks naturally, and has clear logic, which makes people feel enjoyable. Professor Zhong felt strange again. The teachers are all retired academicians, and Xu Qingzhou is a young man in his 20s. At this time, Academician Ma Liangzai walked in. The new week's project meeting officially begins. There was no empty or pretentious content. Everyone took turns reporting on their progress and explaining the current problems they were encountering. Professor Zhong is the last one. "At present, we have encountered two obstacles. One is how to deal with the problem of quantum decoherence, and the second is how to ensure the accuracy of density matrix calculation." "Let's talk about the first one first. In the actual application of quantum satellites, the transmission and measurement of quantum states will inevitably be affected by external factors such as environmental noise and atmospheric interference, which will cause quantum decoherence." "." After finishing the two questions, Professor Zhong said helplessly: "We expect to solve these two problems in a week. Yesterday I also consulted my teacher, Academician Su Yicheng."
"Mr. Su is an expert in both the quantum and linear algebra fields. With Mr. Su in charge, the problem should be solved in a short time, right?" someone said. Professor Zhong shook his head. "The situation is not optimistic. The teacher said that it is very difficult to avoid quantum decoherence, and he needs some time. Now it seems that if we want to completely deal with these two problems, the time required will probably double, about two weeks." Academician Ma nodded and said, "Okay, if the problem cannot be solved within two weeks, I will apply to the institute for assistance to set up a research team." "We are building the world's first quantum satellite. There are certainly difficulties. It is not easy to cross the river by feeling the stones. However, things always develop with twists and turns, and problems will always be solved." "Okay, let's adjourn the meeting. Everyone, hurry up." The meeting dispersed. Professor Zhong was carrying documents to the classroom. When he passed by one of the classrooms, he shouted to the people inside, "Xiao Wan and Xiao Wang, put down what you are doing and come over to my side." The teacher is already 84 years old and doesn't have that much energy. He can only give some suggestions. The work still has to be done by them, so we must concentrate our efforts on major tasks and brainstorm together first. As they walked towards classroom 4201, Professor Zhong asked, "Do you have any new ideas about those two questions?" Wan Hao and Wang Yigui both shook their heads. They didn't get much rest when they went home yesterday. They were just reading papers and looking up information. They tried more than a dozen methods, but none of them worked. The quantum decoherence interference is too strong and the simulated data is invalid. They now have big dark circles under their eyes and look even more tired than when they usually come to the research institute. Wan Hao placed his hopes on Professor Zhong's teacher and asked, "Professor Zhong, what did Academician Su say?" "No good news. Xiao Xu should be here. He said on Saturday that he had some ideas. It's just right to listen to him, huh?" Professor Zhong led the two doctors into classroom 4201. When he saw the situation inside the classroom clearly, he suddenly stopped talking. Wan Hao and Wang Yigui's expressions were also very interesting, especially Wan Hao, who looked like he had seen a ghost, with the corners of his mouth twitching. The three of them seemed to be frozen in place, stunned where they were, with a look of disbelief gradually emerging in their eyes. what's the situation? ? ? ? ? In front, two blackboards were filled with formulas. Xu Qingzhou stood in front of the second blackboard, still writing quickly. Deng Ziyi stood beside him like a little follower.
"Professor Zhong." Xu Qingzhou noticed that Professor Zhong and the others had arrived. He turned around, smiled softly, and said, "Wait a moment. It will be ready soon." "No rush, no rush." Professor Zhong was the first to come back to his senses. He waved his hands and looked at the content on the first blackboard. He vaguely thought of something and his eyes were full of excitement. [\hbar \frac{\partial}{\partial t}\rho(t)= H \rho(t)] Good, good, this step is brilliant! Standing aside, looking at the expressions of Professor Zhong and the others, Deng Ziyi felt inexplicably comforted. Look, even Professor Zhong and the others were scared, let alone her. Help! What should I do if I have a super perverted junior brother? The pressure is so great! On this side, Xu Qingzhou had already finished writing the last two formulas. He clapped his hands and said to Professor Zhong and the others, "In the past two days, I have found a more suitable and efficient method to suppress quantum decoherence." "I used the Lindblad equation, which includes the system Hamiltonian and the Lindblad operator that describes the interaction between the system and the environment. I first used this equation to determine the quantum decoherence situation." The strategy is simple: first identify the quantum decoherence state, find the problem, and then use mathematical tools to solve the problem. He also considered the need to add a final line of defense when solving the problem. "The above methods have enabled us to avoid the impact of quantum decoherence on quantum distribution entanglement. However, I still took out a safety precaution, for example, using quantum error correction coding to detect and correct errors in quantum bits, and then using dynamic decoupling technology to reduce the interaction between the system and the environment." "." Half an hour later, Xu Qingzhou stopped and said, "That's all I have to say about quantum decoherence. Professor Zhong, do you have anything to add?" Professor Zhong shook his head with a complicated expression. The quantum decoherence problem was only encountered on Friday, which means that Xu Qingzhou solved this difficult problem that even the teacher was helpless with in just two days! 2Oh my god! What a terrifying power this is! Xu Qingzhou looked at Wan Hao and Wang Yigui again, and they both shook their heads. Xu Qingzhou's strategy was perfect, and he even thought of using physical means such as quantum error correction coding. No matter how big or small the matter is, young people nowadays are so fucking awesome! Xu Qingzhou nodded slightly and looked at Deng Ziyi beside him. "what?" Deng Ziyi was stunned for a moment, and was touched that the boss asked her if she had any opinions. Then she felt flattered and wanted to say, "Do you want to take a look at what you are asking?" Of course, she complained in her heart, but she took a deep breath, her face calm, and said solemnly and ceremoniously: "I have nothing to add." Mom, I have made it, woooo. "Xiao Xu, your method is perfect." Professor Zhong looked at him with admiration. He thought that someone who could find a solution to quantum decorrelation within two days would definitely have a place in the future physics community of Xia Country. "Junior brother, you are awesome." Wan Hao said admiringly. Xu Qingzhou smiled modestly, "I was also lucky. I found a suitable path and continued my research along this path. I didn't expect that I would actually solve it." "Luck is also part of strength." Professor Zhong shook his head and said, with a smile on his face, "Thanks to Xiao Xu, we have gnawed off a piece of the hard bone. Next, we can continue to gnaw off the density matrix bone!" "That's right. As for the density matrix alone, I believe we can finish it in a week!"
Wan Hao is full of energy. Wang Yigui was also smiling. The sadness on his face had long disappeared. Quantum decoherence had been solved, and it was only a matter of time to figure out the density matrix. Professor Zhong and the other two were very excited, except for Deng Ziyi who was standing next to them. She had a strange expression on her face, as if she wanted to say something but hesitated. (End of this chapter)