Quantum communication method and system based on wavelength division multiplexing coding and key storage conversion

Abstract

The invention discloses a quantum communication system based on wavelength division multiplexing coding and key storage conversion, which realizes multi-wavelength channel quantum key compilation through a wavelength division multiplexing technology, performs multi-wavelength channel quantum key parallel transmission through a single communication optical fiber, realizes multi-channel quantum keyinterpretation through the wavelength division multiplexing technology, converts a multi-wavelength channel parallel quantum key sequence into a single-channel serial quantum key sequence by using a physical domain or information domain method to realize parallel-serial conversion quantum key rate upgrading, constructs, according to the technical thought that quantum keys are distributed and stored in a saturated mode and are taken and used at any time according to classic communication requirements, a rate adaptation mechanism of full-time quantum key distribution (namely non-stop distribution and storage of quantum keys) and non-full-time classical communication (the classical communication comprises a service mode and a standby mode in actual conditions), and finally, realizes high-speed quantum communication capable of supporting a higher service level.

Description

technical field [0001] The invention belongs to the technical field of quantum communication, and relates to a quantum communication system based on wavelength division multiplexing encoding and key storage conversion, in particular to a quantum key distribution and transmission of multi-wavelength channels realized by using wavelength division multiplexing technology, through the quantum The key analysis storage technology converts the multi-channel parallel quantum key sequence into a single-channel serial quantum key sequence, and utilizes the difference in working time between the quantum key distribution system and the classical communication system to realize the high-speed quantum communication technology of rate adaptation. Background technique [0002] Quantum communication technology, based on the Heisenberg uncertainty principle, the principle of inseparability of quantum states and the principle of non-replication of quantum states, is currently recognized as a co...

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Problems solved by technology

[0005] In the field of quantum information, especially in the field of quantum communication, improving the encoding rate of quantum information has always been a research hotspot and technical difficulty of widespread concern; The key distribution rate is always much lower than the classical communication rate, which seriously limits the business capability of the quantum communication system

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