Generating device for continuous variable quantum entanglement between quantum channel and quantum node

Abstract

The invention relates to a generating device for continuous variable quantum entanglement between a quantum channel and a quantum node. The generating device mainly solves the technical problem of probability preparation of the entanglement between the quantum channel and the quantum node at present. According to the technical scheme provided by the invention, the generating device comprises a light source unit, an acousto-optic modulation system, an optical parameter amplifier, an optical beam splitter, an atom system and an entanglement measuring system, wherein the light source unit is provided with a seed optical signal aS1 and aS2 output end, a control optical signal aC output end and a local oscillation optical signal aL1 and aL2 output end; the seed optical signals aS1 and aS2 are connected with a first input end of the atom system through the acousto-optic modulation system, the optical parameter amplifier and the optical beam splitter; the control optical signal aC is connected with a second input end of the atom system through the acousto-optic modulation system; the atom system is connected with the first input end of the entanglement measuring system; a second output end of the optical beam splitter is connected with the second input end of the entanglement measuring system; the local oscillation optical signals aL1 and aL2 are connected with the third and fourth input ends of the entanglement measuring system.

Description

technical field [0001] The invention relates to a device for generating continuous variable quantum entanglement between quantum channels and quantum nodes, in particular to a device for generating continuously variable quantum entanglement between light and atomic systems, and the light and atomic systems are enhanced by optical resonant cavities The degree of entanglement between. Background technique [0002] Quantum entanglement is not only one of the important contents of quantum mechanics, but also the core resource of quantum information transmission and processing. Quantum entanglement between light fields has been prepared experimentally and applied to various quantum information protocols. A quantum internet could be made of light and atoms. Among them, light is an ideal carrier of quantum information. Atoms can interact with light and serve as nodes for quantum information processing and storage. Quantum entanglement between quantum channels and quantum nodes ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the existing technical problem of probabilistic preparation of quantum channel and quantum node entanglement in the preparation of separate variables, and provide a kind of entanglement with good scalability, compact structure and high degree of quantum entanglement that can be applied to quantum information network A device for generating continuous variable quantum entanglement between continuous variable light and atomic systems entangled quantum channels and quantum nodes

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