Dynamic modulated single-photon routing

IF 1.5 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Chinese Physics B Pub Date : 2023-09-04 DOI:10.1088/1674-1056/acf662

Hao-Zhen Li, Ran Zeng, Miao Hu, Meng-meng Xu, Xue-Fang Zhou, Xiu-wen Xia, Jing-Ping Xu, Ya-Ping Yang

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Abstract

The dynamic control of single-photon scattering in a pair of one-dimensional waveguides mediated by a time-modulated atom-cavity system is investigated. Two cases, where the waveguides are coupled symmetrically or asymmetrically to the atom-cavity system, are discussed in detail. The results show that such time-modulated atom-cavity configuration can behave as a dynamical tunable directional single-photon router. The photons with different frequencies can dynamically be routed from the incident waveguide into any ports of the other with a 100% probability via adjusting the modulated amplitude or phases of the time-modulated atom-cavity coupling strengths, associate with the help of the asymmetrical waveguide-cavity couplings. Furthermore, the influence of dissipation on the routing capability is investigated. It is shown that the present single-photon router is robust against the dissipative process of the system, especially the atomic dissipation. These results are expected to be applicable in quantum information processing and design quantum devices with dynamical modulation.

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动态调制单光子路由

研究了时间调制原子-腔系统对一维波导中单光子散射的动态控制。详细讨论了波导与原子-腔系统对称耦合和非对称耦合的两种情况。结果表明，这种时间调制的原子腔结构可以作为动态可调的定向单光子路由器。在非对称波导-腔耦合的帮助下，通过调整时间调制原子-腔耦合强度的调制幅度或相位，不同频率的光子可以以100%的概率从入射波导动态路由到另一个波导的任何端口。此外，还研究了损耗对路由能力的影响。结果表明，单光子路由器对系统耗散过程，特别是原子耗散过程具有较强的鲁棒性。这些结果有望应用于量子信息处理和设计具有动态调制的量子器件。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chinese Physics B 物理-物理：综合

CiteScore

2.80

自引率

23.50%

发文量

15667

审稿时长

2.4 months

期刊介绍： Chinese Physics B is an international journal covering the latest developments and achievements in all branches of physics worldwide (with the exception of nuclear physics and physics of elementary particles and fields, which is covered by Chinese Physics C). It publishes original research papers and rapid communications reflecting creative and innovative achievements across the field of physics, as well as review articles covering important accomplishments in the frontiers of physics. Subject coverage includes: Condensed matter physics and the physics of materials Atomic, molecular and optical physics Statistical, nonlinear and soft matter physics Plasma physics Interdisciplinary physics.