Chapter 1179: 500 qubits!

After coming out of the Jinling Institute of Advanced Studies, Academician Liu felt that the whole person was like sleepwalking, and his head was confused.
After performing a physical demonstration, Lu Zhou then went to the experts from the Chinese Academy of Sciences to explain the application of topological quantum theory to model insulators and how he passed some basic carbon-based integration from a theoretical level Circuit elements as well as Josephson knots to achieve Mayorana Fermion's.
Objectively speaking, it is difficult to understand the complicated physical and mathematical formulas if he wants to understand his application research.
Fortunately, although the formula accounts for more than 70% of the part, there are dynamic graphics as a demonstration, so that they can not completely understand the mystery.
It was only after listening to this "Don't Be Fresh" class that he felt that the worldview he had spent decades building was almost refreshed.
It took less than 1 second to disassemble the product of prime numbers above 1024 bits, which at least shows that the calculator in his hand had at least 500 qubits.
However, this is not the most critical thing. The most important thing is that this quantum computer is only the size of a palm! I don't know how many times the size of the quantum computer in the Chinese Academy of Sciences!
And if it is horizontally contrasted, they achieve the best results, and they only have 20 qubits ...
This is the latest achievement of this year.
In addition, compared with that box-sized quantum computer, what shocked him more was the academician Lu himself who stood on the stage and explained these theories.
Mathematics, physics, materials, and integrated circuit design ... If you divide it a little bit, the knowledge points covered in this course can even be subdivided into more than a dozen branches of discipline.
However, for the young man who was less than thirty years old, the esoteric and obscure knowledge in his hands seemed to come in handy, and there was no obstacle in its application.
If he hadn't seen it with his own eyes, he couldn't believe that someone in this world could really be as good as that.
Maybe this is why he can overcome one world after another ...
When he got into the car parked in front of the institute, Academician Liu suddenly sighed with sigh.
"I feel like ... maybe I need to go back to school to study a bit more."
Director Li's expression was rather calm.
After all, surprised and surprised, that is only for the technology itself. As for the esoteric theory, he couldn't understand it anyway, so he didn't go to his heart at all.
Looking at Academician Liu with a look of shame, he said comfortably.
"... After all, it is Academician Lu. His class is really difficult to understand. Don't take it too seriously. I don't believe it's because you don't understand, even if other people are sitting here."
"It's not a question of whether to go to my heart," Academician Liu shook his head and said, "but sometimes I really feel that I can't keep up with this time."
"Although the topic of topological quantum computing is relatively new, there are also people who are doing it in our institute. The target is Microsoft's Mayorana Fermion project. However, whether it is the project of Academician Pan or the one in our institute The project against Microsoft, or Microsoft's own ... Qubits have always only been around the number of twenty or thirty. "
When he heard this, Director Li couldn't help comforting him, and asked quickly.
"How much did Professor Lu do?"
Academician Liu: "I forgot to ask how much, but from the previous display ... at least 500 is there."
500 ...
This is an order of magnitude higher!
There was silence for a long time in the carriage.
After a while, Director Li sighed as if returning.
"... It's really scary."
...
If the importance of the technology itself is single, the importance of the quantum computer stuff is undoubtedly far more than that of the carbon-based chip itself.
It is even exaggerated to say that it can even be compared with controlled fusion technology.
According to the accepted view, the three pillars of modern technology are energy, information, and materials, and quantum computers have basically stood at the apex of this century's fantasy and hopeful future of information technology.
And it's not just that.
The most important thing is that the traditional encryption method is as if it has been stripped off in front of the quantum computer, and it is completely unguarded.
This is also the scariest part of this technology.
As we all know, not only IT and finance, but more than 90% of the security of modern information networks rely on asymmetric public key encryption, and the most widely used is the RSA encryption algorithm.
Since the factorization of the product of large prime numbers has no fixed formula and only unique solutions, in principle, as long as the product of the prime numbers used is large enough, it is basically equal to no solution, even if it is calculated by Professor Lu. May be calculated in the lifetime.
However, in the face of quantum computers, this kind of question that requires hundreds of years for traditional computers to solve, can be cracked in only a few seconds or even less than a second.
Even if someone might say that asymmetric public key encryption algorithms are not just RSA, but also elliptic curve encryption, Elgamal encryption, etc.
But in the face of the computing power of the quantum computer, what else is it?
I'm afraid I can't even talk about trouble.
After returning home at night, Lu Zhou, sitting at his desk, thought for a long time, and finally took out a stationery and wrote on it with a pen.
[
... The changes that quantum computers bring to the field of communications technology will be disruptive.
The encryption and decryption methods of communication technology have always been in a state of dynamic and balanced development. However, the breakthrough of topological quantum computing technology has broken the balance between offense and defense.
It only takes a few seconds to decrypt a traditional asymmetric public key encryption problem ~ EbookFREE.me ~ Once this technology is popularized, it will bring huge development to our society, and it will also bring huge security Hidden danger.
It is imperative now that we have to establish a stricter and more reliable encryption algorithm as a replacement for the original encryption method.
A quantum encryption algorithm similar to the bb84 protocol is a good choice, but in the face of a quantum computer with more than 1,000 qubits, it will still seem inadequate.
The quantum computer technology with more than 1,000 qubits can be broken in a short time in my opinion.
Therefore, this new encryption rule must be more reliable than the bb48 protocol, and it must even surpass its improved version BBM92.
Once you have mastered this new encryption technology, it is the best time to advance the commercialization of quantum computers.
By then, we will have information technology advantages that other countries cannot match.
It's like the advantages that controlled fusion technology has built for us in the energy sector.
】
Pausing, Lu Zhou found an envelope from the drawer, stuffed the letter in, and threw it at the corner of the table.
When he goes to Jinda tomorrow, he will throw it to Wang Peng and ask him to send someone to Chang'an Street in Beijing.
Although he felt that even if he didn't say anything, Director Li would definitely report to it, but on this kind of issue, sometimes the opinions of experts would be more useful and would be more likely to attract high-level attention.
Although these things are not something that a scholar needs to worry about, if possible, Lu Zhou still hopes that his research results will have some positive impact on the world, rather than pushing it in a bad direction.
Although this may not be as exciting as doing research itself.
But it's also part of the fun.