There are two very important branches of quantum technology, one is quantum communication and the other is quantum computers. Pen, fun, pavilion www. biquge。 infoThe United States chose quantum computers on the grounds that quantum computers are more important. In fact, quantum communication and quantum computers are both important, and it cannot be said who is important and who is not.

We are now living in the era of information explosion, and it is needless to say how important information is to our daily life, we all have a deep experience.

So, quantum communication is also important.

The reason why the United States chose quantum computers and abandoned quantum communication is not really that quantum computers are more important as the United States says. Clear-sighted people know that this is because the United States is not strong enough and can only give up one.

Our country chose both, and also put a quantum satellite into the sky.

After our country launched the quantum satellite into the sky, it had a very huge impact in the world, and the foreign media almost overwhelmingly supported us, thinking that we were amazing.

The United States believes that this threatens the United States, and the United States will lose its right to speak, so the United States announced that it has made significant progress in the field of quantum computers, but the language is unknown, whether it has really made progress, only the United States itself knows in its own heart.

Our country fought back and announced that our country has made important progress in the components of quantum computers, and the next step will be to make it like a USB flash drive, which is easy to carry and prolongs the lifespan.

Our country is ready to establish a project for a quantum computer in the next five years. 、

This news is much better than the empty announcement of the United States, and it is too specific, and the United States has lost its temper and can only become dumb and lose its right to speak.

This is something that everyone on earth knows, and it can boost our morale very much.

When Ye Chen mentioned this, everyone stood up and applauded vigorously. While quantum satellites aren't what they do, they're proud of it.

The applause continued for a long time, and then it stopped, and the crowd sat down again.

"Although our country has made great and encouraging achievements in quantum communication, the satellites we launched are still experimental satellites, mainly used for experiments, and have not yet entered the use stage. This means that quantum communication still has a long way to go before it enters our lives. Ye Chen waited until the applause stopped, and then continued: "Moreover, when quantum communication is really used, there is still a lot of work to be done, and we are looking forward to it." ”

The use of a new technology, how much work needs to be done, the public will not be unaware.

"The maturity of the technology is already very good, and photonic information technology has entered our lives." Ye Chen said: "We are now installing broadband, and the doxxing is generally 20M. Why is it so big? That's the fiber used. Ten years ago, or even earlier, fiber optics were generally used in Internet cafes. At that time, if the Internet café didn't use optical fiber, then you had to congratulate you, congratulations that your business must be terrible. ”

Anyone who loves to go to Internet cafes knows that ten years ago, or even earlier, the business of Internet cafes using fiber optics was booming because it was their main sign.

"And now, optical fiber has entered our lives, and now the installation of the network, almost all of them use optical fiber, which is one of the great contributions made by the elderly." Ye Chen smiled and took the lead in applauding.

There was another round of warm applause, which was given to the seniors who have made significant contributions to our country's information technology.

"Optical fibers, which make use of the total reflection of light." Ye Chen talked about the history of optical fibers and said: "The total reflection of light was first discovered in 1870 by the British scientist Tyndall. He did a shocking experiment: he drilled a hole in a barrel filled with water and used a lamp to illuminate the water from the top of the barrel. People saw that the glowing water flowed out of the small hole in the bucket, and the water bent and the light bent with it, and the light was actually captured by the crooked water. ”

We all know that light travels in a straight line, but in Tyndall's experiment, this theory was overturned, and light can also be distorted. Tyndall's research found that when light is shot from water to air, when the angle of incidence is greater than a certain angle, the refracted light disappears, and all the light is reflected back into the water. On the surface, the light seems to bend forward in the flow of water.

Later on, fibers were created, and when light hits the fiberglass at the right angle, the light travels along the curved fiber.

However, it is not easy to really apply this principle of light to our lives, which requires a reliable light source. It wasn't until the advent of lasers that the light source problem was solved.

Another problem is the production of optical fibers. This was proposed by Charles Kao, the president of the Oriental Pearl University, for building an optical fiber capable of such transmission, for which he was awarded the Nobel Prize.

"The large-scale use of optical fiber has made great changes in our lives, which has made a good accumulation of photonic information technology. But what we're not going to talk about today is about this technology, it's about how photons travel like electrons. Ye Chen's words changed and he officially entered the topic.

Everyone's expressions perked up, what Ye Chen said earlier was just a transition, and now he has only entered the main topic, and the most core photon information technology is about to come out of Ye Chen's mouth.

They will be the first to hear about this advanced technology, and they can't wait for it.

"The advantage of photonic communication is that the communication capacity is large and the confidentiality is good." Ye Chen began to explain formally, and said: "We all know that the laser has very superior performance, but there are also many shortcomings, that is, the laser is greatly affected by the weather, and the complex weather will make the laser weaker or even disappear, how to solve this?" ”

Complex weather has a great impact on the laser, which can weaken the laser or even make the laser disappear, which brings great difficulties to communication.

Xiao Ye is right, it is precisely because of this limitation of the laser that the current photonic communication can only be carried out between heaven and earth or between heaven and sea. What we need to overcome now is how to make photonic communication as convenient as electronic communication, which is too high a technical threshold. Elder Gao was very emotional.

The use of satellites to communicate between the heavens and the earth or between the sky and the sea is not difficult, and this technology has been overcome.

However, this method of communication has significant limitations and is not as convenient as electronic communication and is costly.

The cost of using satellites is not low, and the cost of making transatlantic calls is always much higher than the cost of making domestic calls, and correspondingly, the cost of telephone calls is also much higher.

"If the distance is more than 10 kilometers, the laser is very susceptible to the weather, and the location of the two sides is uncertain, which makes communication more difficult." Gao Lao continued: "Especially on the battlefield, the enemy situation is changing all the time, and the position of the enemy is changing all the time, and this difficulty makes photonic communication unusable. ”

The situation on the battlefield is the most complex, the enemy situation is constantly changing, and the position of the army is also changing all the time, and photonic communication with such huge shortcomings cannot be used.

"Even so, our country has made tremendous progress." Gao Lao was very proud and said: "Our country has just conducted a test, and the distance between the two aircraft is 144 kilometers, and 2.5G airborne laser communication has been carried out, and the experiment is very successful. ”

Bang Bang Bang!

Warm applause rang out, and everyone was particularly excited.

Others may not know what this means, but the technocrats here know what it means.

This means that it only takes 1 minute to transfer a 1080p HD movie between two planes. This transfer speed is very fast and amazing.

Imagine that if our Black Ribbon applied this technology, it would be possible to maintain electromagnetic silence without turning on the radar and receiving any electromagnetic signals, to achieve real-time update and tracking of targets, and to destroy the enemy's key nodes by sending guided weapons or long-range air-to-air missiles outside the defense zone before the enemy is noticing.

In other words, if our Black Ribbon is equipped with such equipment, we can hit wherever we want, and the enemy will not be able to detect it at all.

In other words, only I hit you, you can't even see me, how can you beat me?

In modern warfare, there is a large number of electronic devices that can carry out electromagnetic suppression and can interfere with the enemy. But I don't use electronic devices, I use photonic devices, and your electronic devices are still useful?

If this technology succeeds, the United States will have to weigh it carefully, and how useful will the advanced electronic equipment of the United States be?

Does the big-mouthed president of the United States still dare to provoke us with the policy of "one celestial empire"?

"Remarkable achievement!" Ye Chen exclaimed.

"Xiaoye, do you have any way to solve these defects?" Elder Gao asked expectantly.

"That's how I solved it, you see......" Ye Chen turned on the super light brain and used projection technology to project his solution.

"This is ......" Elder Gao's eyes widened suddenly, and his face was shocked.

"This ......" Zheng Lao and the others stared at each other with a shocked face.

They are all old experts, and they have studied this aspect very deeply, and the answers given by Ye Chen surprised them and shocked them, giving them the feeling of seeing the blue sky through the clouds.

Others don't have the same attainments as they do, frowning and pondering.

Bang Bang Bang!

Elder Gao stood up and took the lead in applauding.

Zheng Lao and the others stood up and applauded vigorously.

The information research and development team that came with Gao Lao and them was very excited, stood up in unison, and clapped their hands fiercely.

The solution to this problem is something that they have been looking for but cannot obtain, although the thing given by Ye Chen has not yet been verified, but in their eyes, they will not know that it is very valuable.

Saying that it was successfully solved, they did not dare to draw such conclusions without verification. However, they can be sure that Ye Chen's method can take photon information technology forward by a big step.

Xiao Lingyue and the others believed in Elder Gao's vision, and stood up and applauded.

The applause lasted for a long time before it stopped.

Next, it was the elders who asked questions.

They are outstanding scientists who have made great contributions to the progress of information technology in our country, and the questions they ask are very professional and cutting-edge.

If it were someone else, he would definitely not be able to answer, but Ye Chen answered fluently, which made Gao Lao and the others both surprised and full of joy.

Elder Gao asked too many questions, and Ye Chen was answering questions for a few days.

Until Ye Chen finished answering, Elder Gao was satisfied and said, "The next thing is to report to the above, build the corresponding experimental equipment, and verify it." ”

No matter how good the theory is, it still needs to be verified.

There was nothing to do with Ye Chen in the future, he returned to the laboratory and began to verify the composite materials.

Through his efforts, the composite materials were finally verified.