my country’s Chinese Academy of Sciences has successfully developed a new technology. This technology is not only ahead of other countries, but also makes American companies afraid of Huawei 5G. It is the absolutely safe quantum communication technology in China. So, why is it absolutely safe?
Another domestic technology leader
Huawei's 5G communication technology is the most patented company in the world, and it is also the first technology to be commercialized. However, after being affected by the United States, Huawei's development in 5G has been slow. However, with the rise of major technology companies in our country, our country has gradually become a leading country in the world from the previous situation of backward technology.
It is worth noting that has another technology in my country that has reached the world's leading level. This technology is even more fearful than 5G communication for American companies. It is quantum communication technology. The so-called quantum communication is to transmit information through superposition between quanta and other methods, which is an absolutely safe technology. And the greatest hero of this technology is the academician of the Chinese Academy of Sciences.
You should know that the way of ordinary communication is to ensure that the other party can smoothly receive and recognize the content under safe conditions. The way of quantum communication is similar to ordinary communication, except that uses key distribution, sharing, and shared password first, and then communicates securely.
Since the invention of the telegraph, the communication method has gradually developed, and the accuracy and safety of the information transmitted slowly is valued. The previous transmission method was through the binary , or it was compiled and transmitted. This way, the password has regularity, and once it is robbed, it is easy to be deciphered.
Now that science and technology are gradually advancing, quantum communication is the safest communication method, and all countries are paying close attention to research. Its most special feature is that can be transmitted without a password. Because it is a password generated by the unclonability of quantum , , so in ordinary communication, even if someone steals the information, it will not change the information. While quantum transmission , as long as someone steals, the quantum unclonability will destroy the information when the stealer steals it.
Quantum communication uses a series of characteristics, and on the basis of communication security, it is divided into keys for distribution. The research and development of this technology lasted for 20 years, and now it has entered the experimental stage, which mainly focuses on the development of remote coding, cryptographic communication and other fields. In other words, no matter how far the distance between the two quanta is, they will move synchronously. And in the process of communication, it is quite difficult to steal the key.
The world's first quantum communication trunk line
However, the distance of quantum communication has always been a difficult problem. It is understood that its distance will be affected by factors such as the environment. In general, the maximum distance of is less than 100 kilometers. However, this has increased the transmission distance, and domestic scientists have been studying it continuously, and now they have made breakthroughs.
According to an article reported by an academician of the Chinese Academy of Sciences, has now extended the transmission distance of quantum communication to 4600 kilometers in China. has served as many as 150 users. In addition, the series connection with the Beijing-Shanghai trunk line also realizes long-distance transmission.After the application of this technology, my country's scientific and technological strength can be significantly improved.
It is worth noting that , the world’s first Mozi satellite, was launched 4 years ago, which has given great help to communications . Moreover, the Chinese Academy of Sciences has achieved 1,200 kilometers of transmission through this satellite. Now the world's first Beijing-Shanghai trunk line has been in use. This is a trunk line with a length of 2,000 kilometers and 32 stations.
In order to continue to increase the distance, the academicians of the Chinese Academy of Sciences continue to optimize their system and break through the technology again. finally combines the 2600 km long AKD circuit with the 2000 km QKD to realize a 4600 km communication network.
Not only that, but the two universities in Shanghai and Jiangxi cooperated and achieved breakthroughs in joint research. They use communication technology, installed communication between 15 users for the first time, and its distance is as long as 40 kilometers. This technology uses a sum frequency generator to decode and finally complete the secure transmission of information. Moreover, the transmission rate of this time has reached 1kbp/s.
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