Periodic photon-magnon blockade in an optomagnonic system with chiral exceptional points
Zhonghui Yuan, Yongjian Chen, Jin‐Xuan Han, Jin‐Lei Wu, Weiqi Li, Yan Xia, Yongyuan Jiang, Jie Song
Abstract
We present a straightforward approach for achieving periodic photon-magnon blockade in a hybrid optomagnonics system, wherein a single optomagnonic resonator is connected to two nanotips via chiral exceptional points (EPs). In non-Hermitian systems, the eigenvalues of the cavity optomagnonics system coalesce at the EPs. We explore the controllable generation of the photon-magnon antibunching effect by modulating the relative angle between the nanotips. Furthermore, we demonstrate that concurrent photon-magnon blockade can be realized without necessitating operation in the strong-coupling regime. In the weak-driving regime, our findings indicate that the photon-magnon blockade is more resilient to the Kerr nonlinearity of both the photon and magnon modes. Additionally, we reveal the versatile tunability of photon-magnon statistics by manipulating the system towards or away from EPs. These characteristics suggest a potential technique for adjustable single photon-magnon sources and a transition from antibunching to bunching in light switches.