Preparation of broadband entangled source
based on microring resonator

doi:10.3969/j.issn.1007-5461.2022.03.013

Abstract

Abstract: In recent years, quantum entanglement has been widely used in quantum communication, quantum computation. Therefore, it is of great significance to prepare high-performance and integrated quantum multicomponent entanglement sources. The silicon nitride microring resonator is pumped by a tunable laser, four wave mixing occurs under the action of third-order nonlinear effect, resulting in the generation of signal and idle. Based on the entanglement criterion testing the entanglement between signal and idle, the degree of entanglement between signal and idle is calculated. The results show that eight pairs of two-component continuous variable quantum entangled states can be generated in the microring resonator. Besides, the entanglement source system has several advantages such as small size, low power consumption and simplified integration, which has important research value in the field of integrated optical quantum chips.

Key words: quantum optics, quantum entanglement, spontaneous four-wave mixing, quantum communication

CLC Number:

O431.2

TANG Xiaofan. Preparation of broadband entangled source based on microring resonator[J]. Chinese Journal of Quantum Electronics, 2022, 39(3): 418-422.

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Preparation of broadband entangled source based on microring resonator

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