Electrical Equipment / Components & Telecoms

According to Huacheng Import and Export Data Observation, researchers from Russia, China and Thailand have jointly developed a technology that can protect quantum communication from the attack of strong light reverse injection. Xiang Ligang, a communications expert, said that the progress of this technology is of great significance for the transmission of information with confidentiality needs.

The Russian satellite news agency quoted the news released by the Moscow Institute of Iron and Steel and Alloy of the Russian National Research University of Science and Technology as saying that the key in the quantum encryption technology is distributed and transmitted in the form of photons and cannot be cracked or copied. However, one of the loopholes of this technology is the strong light reverse injection, which may lead to the key leakage and the operation error of the quantum communication channel. The success of the "repelling" strong light injection attack test means that reliable protection against such attacks has been established, Huacheng Import and Export Data Observation reported.

According to the Huacheng Import and Export Data Observation, on October 4, the 2022 Nobel Prize in Physics was announced and awarded to French physicist Alan Aspe, American theoretical and experimental physicist John Francis Klose and Austrian scientist Anton Salinger, in recognition of their contributions to the scientific research of quantum information.

The White Paper on 6G Research in 2021 pointed out that quantum secure direct communication has the ability to detect eavesdropping and can show great potential in the next generation of secure communication. In April this year, Chinese scientists successfully realized 100 km quantum direct communication.

According to the observation report of Huacheng Import and Export Data, Xiang Ligang, a communication expert, said that the security of quantum communication technology is much higher than that of the general communication mode. Under the mode of quantum direct communication, as long as there is an attack, it will automatically stop. The progress of this technology is of great significance to some organizations with confidentiality needs.

"This technology mainly solves the security problem, which is not particularly obvious to ordinary consumers, but will be demanded by telecom operators." Xiang Ligang further explained, "This refers to the confidentiality issues involving state secrets or other sensitive information during information transmission. In order to prevent eavesdropping or information interception, corresponding confidentiality measures should be taken."

Xiang Ligang said that although a series of breakthroughs have been made in the current quantum communication technology, the direct communication mode of quantum communication cannot be applied in practice, but it will hopefully be realized in the future. "At present, quantum communication is mostly key management and encryption through quantum technology, rather than point-to-point information transmission." Huacheng Import and Export Data Observation Report.