Abstract

We investigate the dynamical blockade in a nonlinear cavity and demonstrate the connection between the correlation function g⁽²⁾(t) and system parameters in the entire nonlinear region. Utilizing the Liouville exceptional points (LEP_s) and quantum dynamics, a near-perfect single-photon blockade (1PB) can be achieved. By fine-tuning system parameters to approach the second-order LEP (LEP₂), we improved single-photon statistics in both weak and strong nonlinearity regimes, including a significant reduction of g⁽²⁾(t) and a pronounced increase in the single-photon occupation number. In the strong nonlinearity region, the maximum photon population may correspond to stronger antibunching effect. Simultaneously, the time window and period of blockade can be controlled by selecting detuning based on the LEP₂. Furthermore, the 1PB exhibits robustness against parameter fluctuations, and this feature can be generalized to systems for implementing single-photon sources with nonharmonic energy levels.

© 2024 Optica Publishing Group

Enhanced photon blockade in an optomechanical system with parametric amplification

Dong-Yang Wang, Cheng-Hua Bai, Xue Han, Shutian Liu, Shou Zhang, and Hong-Fu Wang
Opt. Lett. 45(9) 2604-2607 (2020)

Nonreciprocal magnon blockade based on nonlinear effects

Han-Qiu Zhang, Shuang-Shuo Chu, Jian-Song Zhang, Wen-Xue Zhong, and Guang-Ling Cheng
Opt. Lett. 49(8) 2009-2012 (2024)

Photon blockade with high photon occupation via cavity electromagnetically induced transparency

Yu You, Lingjuan Feng, Bing Chen, Da Chen, Yandong Peng, and Shangqing Gong
Opt. Express 32(10) 17793-17805 (2024)

Nonreciprocal magnon blockade via the Barnett effect

Kai-Wei Huang, Xin Wang, Qing-Yang Qiu, and Hao Xiong
Opt. Lett. 49(3) 758-761 (2024)

Polarization-engineered photon statistics and its tomography via optomagnonic interaction

Zhu Liang, Ying Wu, and Jiahua Li
Opt. Lett. 49(10) 2749-2752 (2024)