Free space quantum key distribution system and method for aircraft

A quantum key distribution, free space technology, applied in the field of free space quantum key distribution system to achieve the effect of ensuring security

Pending Publication Date: 2020-05-15
GUANGDONG INCUBATOR TECH DEV CO LTD
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Problems solved by technology

However, it only involves quantum secure communications between two aircraft, and does not involv

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  • Free space quantum key distribution system and method for aircraft
  • Free space quantum key distribution system and method for aircraft
  • Free space quantum key distribution system and method for aircraft

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[0049] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples, but the protection scope of the present invention is not limited to the following specific examples.

[0050] Such as Figure 1-6 As shown, a free-space quantum key distribution system for aircraft, including the aircraft F n with ground station G m equipment, the aircraft F n with ground station G m The devices all include a quantum key distribution system, the quantum key distribution system is used to send and receive quantum communication signals, the quantum key distribution system is the sender Alice when sending the quantum communication signal, and it is the receiver when receiving the quantum communication signal Bob.

[0051] In practical applications, one or both of the communicating parties is an aircraft, or one is an aircraft and the other is a ground station d...

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Abstract

The invention discloses a free space quantum key distribution system and method for an aircraft. Theoretically absolutely safe point-to-point quantum secret communication can be realized between an aircraft carrying the quantum key distribution equipment and any aircraft or ground station carrying the equipment. A communication sender attenuates strong laser to obtain quasi-single-photon laser with an average photon number in the single-photon level, then performs polarization state modulation on the quasi-single-photon laser according to a polarization BB84 protocol, and sends the quasi-single-photon laser to a receiver through an optical antenna via a free space. And the receiver receives the single photon from the sender through the optical antenna, and demodulates key information carried by the single photon through a quantum signal receiving system. Because the single photon in the unknown quantum state has the characteristics of non-replicability and non-divisibility, the third party cannot steal the key information of the two communication parties without being discovered, and the security of the aircraft communication information is ensured.

Description

technical field [0001] The invention relates to the field of quantum key distribution, in particular to a free-space quantum key distribution system and method for aircraft. Background technique [0002] With the widespread popularization of the Internet, information transmission has reached an unprecedented quantity and frequency, and various private information is increasingly exposed on the Internet. Therefore, people's demand for confidential communication has also reached an unprecedented height. Quantum key distribution uses the quantum state as the information carrier. Based on the uncertainty relationship of quantum mechanics and the quantum non-cloning theorem, the communication parties share the key through the quantum channel. It is the product of the combination of cryptography and quantum mechanics. Quantum key distribution technology does not transmit ciphertext in communication, but only uses quantum channels to transmit keys and distribute keys to both partie...

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Application Information

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IPC IPC(8): H04L9/08H04B10/70
CPCH04B10/70H04L9/0852H04L9/0858
Inventor 郭邦红朱明昊胡敏
Owner GUANGDONG INCUBATOR TECH DEV CO LTD
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