中国物理B ›› 2022, Vol. 31 ›› Issue (7): 70304-070304.doi: 10.1088/1674-1056/ac4cbc

• • 上一篇    下一篇

Photon blockade in a cavity-atom optomechanical system

Zhong Ding(丁忠) and Yong Zhang(张勇)   

  1. School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2021-12-09 修回日期:2022-01-17 接受日期:2022-01-19 出版日期:2022-06-09 发布日期:2022-06-13
  • 通讯作者: Yong Zhang E-mail:zhyong98@bupt.edu.cn

Photon blockade in a cavity-atom optomechanical system

Zhong Ding(丁忠) and Yong Zhang(张勇)   

  1. School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2021-12-09 Revised:2022-01-17 Accepted:2022-01-19 Online:2022-06-09 Published:2022-06-13
  • Contact: Yong Zhang E-mail:zhyong98@bupt.edu.cn

摘要: We study the single-photon blockade (1PB), two-photon blockade (2PB), and photon-induced tunneling (PIT) effects in a cavity-atom optomechanical system in which a two-level atom is coupled to a single-model cavity field via a two-photon interaction. By analyzing the eigenenergy spectrum of the system, we obtain a perfect 1PB with a high occupancy probability of single-photon excitation, which means that a high-quality and efficient single-photon source can be generated. However, PIT often occurs in many cases when we consider 2PB in analogy to 1PB. In addition, we find that a 2PB region will present in the optomechanical system, which can be proved by calculating the correlation function of the model analytically.

关键词: photon blockade, photon-induced tunneling, cavity-atom optomechanical system

Abstract: We study the single-photon blockade (1PB), two-photon blockade (2PB), and photon-induced tunneling (PIT) effects in a cavity-atom optomechanical system in which a two-level atom is coupled to a single-model cavity field via a two-photon interaction. By analyzing the eigenenergy spectrum of the system, we obtain a perfect 1PB with a high occupancy probability of single-photon excitation, which means that a high-quality and efficient single-photon source can be generated. However, PIT often occurs in many cases when we consider 2PB in analogy to 1PB. In addition, we find that a 2PB region will present in the optomechanical system, which can be proved by calculating the correlation function of the model analytically.

Key words: photon blockade, photon-induced tunneling, cavity-atom optomechanical system

中图分类号:  (Quantum communication)

  • 03.67.Hk
14.70.Bh (Photons) 42.50.-p (Quantum optics) 42.50.Pq (Cavity quantum electrodynamics; micromasers)