The moment the experiment began, everyone held their breath.
However, the miracle did not happen. The receiving device did not capture the specific photon. It is not known whether there was a problem during encryption or reception.
"There may be a problem with the quantum channel." Lu Yang added. Guo Can rubbed his temples and his head was buzzing. Doesn't this mean that there may be problems with all links?
He also said that he wants to achieve complete teleportation, but now it is impossible to improve the efficiency of quantum key distribution. How about playing?
After three days of experiments and repeated experiments tens of thousands of times, specific photons were captured eight times out of ten. This efficiency made the team numb.
These academic masters fully understand the pain of poor students. They have given technical instructions, but why can't they solve it? nonsense!
There are also specific steps to prove the Riemann Hypothesis. How many people can understand it?
If you don’t meet the basic knowledge, you have to verify it step by step.
Chen Xiao gave technology. The problem is that once it comes to technical improvement, it is an expansion of the overall knowledge framework. If you score 70 points in the modern science test, you can work hard. If you score 90 points or more, every point will be very difficult, sometimes twice as much. Your efforts can only improve 0.001 points.
And this kind of leap, even if there is information provided by the system, you still have to try hard. This is a process of mastering technology. Only by doing this can all supporting facilities catch up.
"Everyone, stop for a moment. I think this method is a bit unreliable. I have thought of a way, but I don't know if it will work."
"Let's talk quickly, can it be worse than now? We haven't even crossed the threshold."
"Since photons cannot be caught after they are emitted, we can choose to lock up the photons first, burn the information and encrypt them, and then release the photons.
Photons have no attributes, so there is no way to control their speed. Unless the gravity fields like black holes are involved, it may be possible to control the speed, but we cannot create a black hole. "
"Drop it! Wouldn't it be better to just connect it directly to the optical fiber? We are still doing research! Besides, if there is a black hole, wouldn't it interfere with quantum entanglement? Did you buy it with a doctorate degree?"
"How can you curse! If there are multiple black holes, maybe we can slow down and recover, and the effects will be balanced back! No! I didn't say anything about black holes."
"Wasting time to come up with this solution? Can't you rely on optical fiber? Do you want the manufacturing department to make an optical fiber for you that can only accommodate one photon?"
"Stop arguing!"
Scientific research is not always polite, humble and reasonable as everyone imagines. If you are anxious, you will really get started. Everyone is arguing and arguing and can't come up with a conclusion. If the basic theory here cannot be figured out, the chip of the mobile phone will not be able to work. Design and mass production put a lot of pressure on the quantum team.
The way everyone thought before was to directly emit laser point-to-point. As long as the laser is concentrated enough, the impact on the real world is small enough.
But it's not. If there happens to be an obstruction during the launch process, it will still receive a hammer.
That's not to say that this idea is completely useless. At least it can be used for emergency contact with some specific confidential units, but it can only be used as a last resort. This method consumes a lot of instantaneous power and the equipment is complicated. It is not as practical as sending a specific password by wireless.
For civilian use, we still have to think of a better way.
"Just put aside the classical information and focus on quantum entanglement! We have to jump ahead. No matter how we follow the original path, it will be a dead end! After all, ten-photon entanglement has been achieved now. We might as well start from here!" Guo Can after not sleeping for several days The decision was finally made.
The reason for making this decision is that the supporting technology required by the technology given in the data is too different from the existing production content.
Everyone is really numb. It’s a failure anyway, so it’s better to think differently and fail.
In this way, this group of people retreated and began to conduct experiments, which no longer involved traditional optical fiber transmission, but real photon entanglement!
The real difficulty now is that the entangled state is a physical resource. Affected by laboratory conditions and environmental noise, it is difficult to create the maximum entangled state. A pure entangled state will also degenerate into a mixed entangled state when it is desiccated by the environment, which will distort the information. In this way, the mixed entanglement must be converted into a pure entangled state, which is called entanglement purification technology.
After months of hard work, this group of people finally came up with the theory at the end of 2023. This was due to the improvement of technology in the manufacturing department and the equipment they needed was manufactured. Otherwise, it would just be a fantasy.
This is why Yang Ming called for the emphasis on skilled workers in his academic report.
If you can't imagine it, people will have to be suffocated to death by being peed on. If manufacturing technology improves quickly enough, this feasibility theory will come out in the middle of the year, which shows the importance of manufacturing.
The improvement of the manufacturing industry also requires the improvement of basic theory, and then all production departments. This can only be achieved through simultaneous improvement of interdisciplinary disciplines. If one part has a weakness, then the upper limit depends on how low the weakness is.
The Changtian Academy of Natural Sciences and the Xia Academy of Sciences jointly published a related paper. This paper is not public and has only been read by some experts from related disciplines and manufacturing departments.
On the one hand, this is not a complete theory, and it can only be verified after a full set of equipment is in place. On the other hand, it is a national secret, related to communication security, and must not be made public.
The base station will only be built in early 2024. Before that, the joint team continued to optimize the experimental process and improve the theory in the research laboratory. After these days of continuous improvement, the team is still very nervous about the experimental results in the actual environment.
Finally, the day of the experiment came. One base station was in the Taklimakan Desert, and the other base station was in Venezuela on the other side of the world. The equipment was transported there in secret. Even if Venezuela was told, there would probably be no objections.
There were three minutes left in the experiment, and everyone held their breath. After suffering for so long, the final exam finally came today. If he failed, he really didn't know how to calm down and do research again.
"Hoo! Hoo!" The wind in the Taklimakan Desert was very noisy today, and the sand and dust were billowing, like waves, constantly hitting the equipment. The base station is like a lighthouse buoy in the rough sea, and it seems that it will be blown down at any time.
In Venezuela, it happened to be the end of summer, when the rainfall in the tropical rainforest climate is heaviest. The cloud activities during this period were very complicated. On the day of the experiment, there was lightning and thunder, and it was dark as if it was the end of the world.
Such harsh conditions made everyone feel uneasy. Such bad weather had the greatest impact on the experiment. But from another perspective, if the experiment can be successful under such conditions, it will prove that the technology is reliable and will be commercialized very quickly.
"The experiment has begun! I hope everything will be successful!" Guo Can stood in the wind and sand wrapped in a cotton coat. He did not want to stand there and wait for the results of the experiment. He did not have the courage to see it himself, but waited for his employees to inform him.
Pan Jian and Lu Yang did not go in either. They would rather listen to the loud noise of the wind and sand because this experiment is too important and is enough to win the Nobel Prize in Physics. This is actually unimportant. The most important thing is that they will start a new era. era!
"Quantum computer enabled, quantum algorithm ready!"
"Quantum encoding in progress."
"The ion trap is fully prepared and the multi-ion entangled state is successfully achieved!"
"The degree of entanglement is up to standard."
The inquiry message has been sent, and that's it. The rest is waiting for news from Venezuela.
Normally, on-site coding takes a short time and only requires manual answers to specific questions. But for everyone, these five seconds are like five years.
Five seconds later, news came back from Venezuela: "Keep right!" Everyone was jubilant.
Because the question is: "In Xia Kingdom, do pedestrians and vehicles walk on the left or on the right?"
"Don't worry! There are still problems in Venezuela!" The person in charge at the scene could not hold back his joy.
News spread quickly over there: "My mother and my wife fell into the water at the same time, who do you want to save first?"
Obviously Venezuela is also cheering for such a naughty problem.
"Reply them and get lost! We succeeded!" The person in charge shouted and ran out. The sound here could not be heard in the wind and sand. The three leaders were looking at the base station with their backs to the control center.
"We succeeded! We succeeded!" The person in charge of the scene ran in front of the three people, roaring at the top of his lungs. When he opened his mouth, wind and sand entered his mouth, but his expression already told the three people the result.
This is quantum communication in the absolute sense. It does not rely on satellites, but only relies on the principle of entangled states. The device sends and receives entangled pairs and converts them into specific codes. The codes are then converted into text, language, pictures and other information that humans can understand.
Three men in their forties hugged each other, as happy as children. When they returned to the control room, the people inside were almost crazy.
"Hahaha! I finally got through it! I've lost a lot of hair!"
"Let the people in the biology laboratory get us some hair-growth drugs! Aren't they awesome? They have the ability to cure baldness! What kind of cell totipotent! We are doing quantum science! Ah!"
"Don't pull me, I'm not crazy, hahaha! I want to call home!"
"What are you calling! The base station for quantum communication hasn't been built yet!"
"Are you confused? Didn't humans stop making phone calls before quantum communication came out?"
"right!"
Everyone had been suppressed for too long and just wanted to vent their frustrations over long-term problems. When the three big guys saw this, they didn't stop them. Instead, they found a quieter place to drink together.
"Actually, we have heard of your name a long time ago. If you come to the Academy of Sciences, you will definitely become an academician." After three drinks, Pan Jian looked at Guo Can with sympathy.
Guo Can smiled: "I know, but when it comes to doing research, as long as you have the research conditions, what difference does it make where you go?"
"Actually, I want to come to Changtian Technology. Good ideas here come one after another, and good technologies keep popping up. It is a paradise for researchers to stay in this place. Even if they are not in their own field, it is good to have a look. ." Lu Yang said it very directly, he didn't know how to beat around the bush.
"No, no, no, don't talk about this, or you'll say I'm poaching. Haha!" Guo Can waved his hands quickly, he couldn't make the decision in this matter, "One thing is for sure, we will cooperate more and more in the future. , because Changtian Technology alone really doesn’t have enough people.” The number of talents is also a very important factor. Don’t be stingy when borrowing people from you two in the future! "
"That's our pleasure!"
This time, the cooperation between Changtian Technology and Xiaguo Academy of Sciences is very in-depth and has reached the level of sharing theories, which has also brought great success.
"Look at the little brats! Don't let them do anything excessive. Young people can't hold their temper." Pan Jian suggested as he was almost done at this time.
When the three of them arrived at the control room, it was very quiet inside. Only a few people were on duty, and the rest were gone.
"Where are the others? Where did they go to celebrate?" Guo Can asked subconsciously.
"Professor Guo, everyone has gone to find a place to rest. Many people have stayed up for more than ten days without much sleep. Some people spontaneously followed them when it was time to rest. Do you want me to call them? Is there something urgent to deal with? "The employee on duty explained a little bit.
"No, let them have a good rest."
When the three of them were inspecting the base, they passed by the conference room and discovered that a large number of people were sleeping around inside. There were not enough dormitories here, so the gay men had to make do with sleeping on the floor, and the lesbians went to sleep on the beds in the dormitory. Even in such an environment , these people all slept soundly.
"Just inform them of a three-day holiday and let them arrange their own duties. What do you think, Academician Pan?"
"I agree! The children have worked really hard."
After Chen Xiao learned the news of the successful practice, he was very happy and gave him a generous scientific research bonus. The next step is to plan the construction of the base station.
Quantum communication also requires a base station. Its function is to distribute entangled photons, convert specific codes, and achieve communication.
Moreover, the computing power of each base station is limited. If you want to achieve universal communication, you must have enough base stations or increase the computing power.
The initial idea is to take over the operator's base station and transform it. If the transformation is too difficult, then we will have to build it from scratch.
The next step for the experimental team is still very heavy. Improving computing power is not easy. How much information can one photon carry? In principle, if there are enough entangled states between the base station and the mobile phone, and if they are complex enough, the most information can be processed in the shortest time. The difference is like one using Morse code to spell it out, and the other using words to express it directly.
Once there are too many entangled states between the mobile phone quantum chip and the base station, they may interfere with each other and affect the fidelity of information.
So, these are the questions to think about next.
In other aspects, the manufacturing of relevant equipment must also understand the basic theory and translate it into production theory and production parameters. The experimental team must send people to keep an eye on it. Applied physics is the key bridge from theoretical physics to production.
However, Chen Xiao is very confident that it will be solved soon. The first step has been taken, and at least there is a direction for the road ahead.
(End of chapter)
