中国物理B ›› 2026, Vol. 35 ›› Issue (2): 24205-024205.doi: 10.1088/1674-1056/adfc40

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Controllable phase-dependent optical switch in an atom-cavity system

Xu-Yang Li(李旭阳), Yuan-Feng Lu(陆元峰), Ya-Jie Wu(吴亚杰), Ning Li(荔宁), and Miao-Di Guo(郭苗迪)   

  1. School of Sciences, Xi'an Technological University, Xi'an 710021, China
  • 收稿日期:2025-06-05 修回日期:2025-07-31 接受日期:2025-08-18 发布日期:2026-02-05
  • 通讯作者: Miao-Di Guo E-mail:guomiaodi@xatu.edu.cn
  • 基金资助:
    This project is supported by the National Natural Science Foundation of China (Grants Nos. 12304405, 12275203, and 12075176), the Natural Science Foundation of Shaanxi Provincial Department of Education (Grant No. 23JK0483), the Natural Science Basic Research Program of Shaanxi (Grant Nos. 2024JC-YBMS-521 and 2024JC-YBMS-039), the 2022 Shaanxi University Youth Innovation Team Project (Grant No. K20220186), and the College Students’ Innovative Entrepreneurial Training Plan Program of Shaanxi (Grant No. S202410702178).

Controllable phase-dependent optical switch in an atom-cavity system

Xu-Yang Li(李旭阳), Yuan-Feng Lu(陆元峰), Ya-Jie Wu(吴亚杰), Ning Li(荔宁), and Miao-Di Guo(郭苗迪)   

  1. School of Sciences, Xi'an Technological University, Xi'an 710021, China
  • Received:2025-06-05 Revised:2025-07-31 Accepted:2025-08-18 Published:2026-02-05
  • Supported by:
    This project is supported by the National Natural Science Foundation of China (Grants Nos. 12304405, 12275203, and 12075176), the Natural Science Foundation of Shaanxi Provincial Department of Education (Grant No. 23JK0483), the Natural Science Basic Research Program of Shaanxi (Grant Nos. 2024JC-YBMS-521 and 2024JC-YBMS-039), the 2022 Shaanxi University Youth Innovation Team Project (Grant No. K20220186), and the College Students’ Innovative Entrepreneurial Training Plan Program of Shaanxi (Grant No. S202410702178).

摘要: Coherent perfect absorption (CPA) and coherent perfect transmission (CPT) are two extreme states arising from the manipulation of optical fields. Generally, CPA and CPT occur under different input-field phases. Therefore, we propose a scheme to realize an all-optical switch based on phase-dependent CPA-CPT conversion. In our proposal, the CPT state and the CPA state are treated as the on state and the off state, respectively. Consequently, the efficiency of this all-optical switch can reach the maximum value of 1. With the introduction of an incoherent pump field, the CPA state can be achieved under a weaker input probe field or can be converted into a CPT state. The results show that the optical switch can operate with weaker fields and can be further optimized by the application of an incoherent field.

关键词: coherent perfect absorption, cavity-QED, optical switching

Abstract: Coherent perfect absorption (CPA) and coherent perfect transmission (CPT) are two extreme states arising from the manipulation of optical fields. Generally, CPA and CPT occur under different input-field phases. Therefore, we propose a scheme to realize an all-optical switch based on phase-dependent CPA-CPT conversion. In our proposal, the CPT state and the CPA state are treated as the on state and the off state, respectively. Consequently, the efficiency of this all-optical switch can reach the maximum value of 1. With the introduction of an incoherent pump field, the CPA state can be achieved under a weaker input probe field or can be converted into a CPT state. The results show that the optical switch can operate with weaker fields and can be further optimized by the application of an incoherent field.

Key words: coherent perfect absorption, cavity-QED, optical switching

中图分类号:  (Quantum optics)

  • 42.50.-p
42.50.Pq (Cavity quantum electrodynamics; micromasers) 42.65.Pc (Optical bistability, multistability, and switching, including local field effects)