Open AccessBroadband coherent perfect absorption by cavity coupled to three-level atoms in linear and nonlinear regimes
Author(s) -
Liyong Wang,
Jiangong Hu,
Jingshan S. Du,
Ke Di
Publication year - 2021
Publication title -
new journal of physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.584
H-Index - 190
ISSN - 1367-2630
DOI - 10.1088/1367-2630/ac38cd
Subject(s) - physics , optical bistability , bistability , sideband , resonator , excited state , nonlinear system , broadband , excitation , absorption (acoustics) , field (mathematics) , optical cavity , quantum optics , nonlinear optics , optics , quantum electrodynamics , atomic physics , quantum mechanics , laser , microwave , mathematics , pure mathematics
A broadband coherent perfect absorption (CPA) scheme consisting of an optical resonator coupled with three-level atoms excited by single cavity mode is proposed and analyzed. We show the output light field from the system is completely suppressed under specific conditions when the system is excited in linear and nonlinear regimes by two identical light fields from two ends of optical cavity. An analytical broadband CPA criterion for central and sideband excitations of cavity quantum electrodynamics system is derived in linear regime. Moreover, we show the resonant excitation criterion for CPA is greatly extended in nonlinear regime. A new type of bistability behavior is found. The output field intensity and the bistability curve can be well tuned by dynamically adjusting system parameters. Our results demonstrate that the CPA is quite universal, and it should be useful in a variety of applications in optical logic and optical communication devices.