2017/05/03 by Kejia Zhu, Yong Sun, Jie Ren +1
Physics and Astronomy · #Advanced Fiber Laser Technologies #Bistability #Mechanical and Optical Resonators #Microwave #Optical bistability #Photonics #Quantum Mechanics and Non-Hermitian Physics #Resonator #State (computer science) #cond-mat.mes-hall #physics.optics
paper · pdf · doi:10.1088/1367-2630/aa70a8
published as New J. Phys. 19, 063043 (2017) · 9 pages, 4 figures, published in NJP 19, 063043 (2017). See this page: https://doi.org/10.1088/1367-2630/aa70a8
openalex publication_date 2017/05/03 · openalex created_date 2017/05/12 · arxiv created 2018/02/23 · arxiv updated 2018/02/26 · openalex updated_date 2026/08/06
By exploring the extraordinary property of exceptional points (EPs) in non-Hermitian systems, we here demonstrate that losses can play a constructive role in controlling bistable states. We experimentally realize the EP in a non-Hermitian meta-molecule of coupled resonators in a microwave regime. By increasing the loss, we first observe the bistable state suppression at the weak-dissipative regime, and then the bistable state recovery in the strong-dissipative regime. Both the experimental and theoretical analysis demonstrate that the revival of bistable states results from the revival of the field intensity after the system encounters EPs, in spite of the increasing loss. Our results provide an alternative way to controlling and manifesting bistable systems so as to achieve flexible photonic devices not limited to the microwave regime.