High-dimensional multiplexing quantum communication method, system and storage medium based on chip integrated optical path

Abstract

The invention discloses a high-dimensional multiplexing quantum communication method based on a chip integrated optical path, and the method comprises the steps: sequentially multiplexing a pluralityof optical degrees of freedom of a light quantum in a quantum information coding process, and achieving the multi-bit quantum bit coding on the basis of each optical degree of freedom; performing high-dimensional multiplexing quantum information transmission through a multi-core optical fiber or a multi-fiber optical cable; and performing decoding through a corresponding high-dimensional multiplexing quantum information decoding system, and detection and analysis of quantum information are realized through a single photon detector array. In the process of realizing the high-dimensional multiplexing quantum communication system, the technical scheme of a chip integrated optical path is adopted, and the advantages of low power consumption, low loss, high stability, high optical performance and the like of the chip integrated optical path are utilized, so that the full chip integration of the high-dimensional multiplexing quantum communication system is realized. Relative independence between optical degrees of freedom and the characteristic that a single optical degree of freedom can be densely coded are utilized, the quantum information rate is increased on the basis of a traditional single-dimensional quantum communication system, and miniaturization, popularization and high-speed engineering application of the quantum communication technology are expected to be promoted.

Description

technical field [0001] The invention belongs to the technical fields of micro-nano optoelectronics and quantum communication, and specifically refers to a quantum communication method, system and storage medium for realizing a high-dimensional multiplexing quantum communication protocol by using a large-scale integrated optical path of a chip. Background technique [0002] Quantum communication technology, based on Heisenberg’s uncertainty principle, the principle of non-duplication of quantum states, and the principle of inseparability of quantum states, is currently recognized as a communication technology that can achieve “unconditional security”. Quantum communication technology can be divided into quantum teleportation communication technology and quantum key distribution technology according to the working principle. Quantum teleportation communication technology refers to the use of the long-distance effect of entangled quantum states to realize the instantaneous and ...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the quantum information rate bottleneck faced by the single-degree-of-freedom and low-dimensional quantum communication protocols commonly used at the present stage, and to double the quantum information rate through multi-degree-of-freedom multiplexing and high-dimensional coding quantum communication protocols ;Aiming at the strict requirements of the optical path required for realizing high-dimensional multiplexing quantum communication protocol in terms of complexity, stability, and high efficiency, a technical route for realizing a full-chip quantum communication system by using chip large-scale integrated optical path and optoelectronic hybrid integration technology is proposed

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