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Researchers from USTC Publish Review of Quantum Secure Communication

Jun 06, 2020

Prof. PAN Jianwei, Prof. XU Feihu and Prof. ZHANG Qiang from University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS), collaborating with Prof. MA Xiongfeng from Tsinghua University and Prof. Hoi-Kwong Lo from University of Toronto, were invited to publish a review titled "Secure quantum key distribution with realistic devices" in the Reviews of Modern Physics on May 26th.

This is the second review paper published by Prof. PAN’s team, and is also the second review paper of China in quantum information science published in this journal.

Quantum communication is an important branch of quantum information science. It refers to the communication technology that uses quantum bits as information carrier to carry out information interaction.

One of the most typical applications of quantum communication is quantum key distribution (QKD). QKD can provide a theoretically secure means of communication, which is the only communication method whose security has been strictly proved so far. It is also the first quantum information technology from laboratory to practical application, becoming one of the most dynamic frontiers in physics.

In recent years, with the development of practical research of QKD, the realistic security of QKD has been widely concerned in the world. The potential security risks and solutions introduced by devices in actual systems that do not fully conform to the mathematical model of the protocol was mainly studied. It’s worth mentioning that Prof. PAN's team experimentally realized several important new protocols in the world for the first time.

This paper reviews the development history of quantum cryptography in detail, discusses the practical security of quantum key distribution in depth, and forecasts the future development trend of QKD technology.

Throughout more than 30 years of joint efforts of global researchers, the security of practical quantum cryptography has been established.

In particular, the proposed QKD protocol, such as measurement-device independent (MDI) protocol, removes the security risks that may occur in the physical realization of quantum cryptography, paving the way for the quantum cryptography based on real devices.

A special comment published in the journal states that this review gives both sides of the story, with the current best theory of quantum security, and an extensive survey of what makes quantum cryptosystem safe in practice.

Reviews of Modern Physics is the most authoritative review journal in the field of physics with an average impact factor of over 40 in the past five years. Only about 40 academic papers are published every year.

Contact

Jane FAN Qiong

University of Science and Technology of China

E-mail:

Secure quantum key distribution with realistic devices

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