Exceptional points treatment of cavity spectroscopies
arXiv:2304.13641 · doi:10.1063/5.0142022
Abstract
The infrared response of a system of two vibrational modes in a cavity is calculated by an effective non-Hermitian Hamiltonian derived by employing the nonequilibrium Green's functions (NEGF) formalism. Degeneracies of the Hamiltonian (exceptional points, EP) widely employed in theoretical analysis of optical cavity spectroscopies are used in an approximate treatment and compared with the full NEGF. Qualitative limitations of the EP treatment are explained by examining the approximations employed in the calculation.
arXiv commentThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in J. Chem. Phys. 158, 154106 (2023) and may be found at https://doi.org/10.1063/5.0142022 Copyright (2023) Authors. This article is distributed under a Creative Commons Attribution (CC BY) License
References in corpus (26)
- Cavity Optomechanics
- The physics of exceptional points
- Loss-induced suppression and revival of lasing
- Topological energy transfer in an optomechanical system with exceptional points
- Observation of non-Hermitian degeneracies in a chaotic exciton-polariton billiard
- Reversing the Pump-Dependence of a Laser at an Exceptional Point
- Observation of an exceptional point in a chaotic optical microcavity
- Input-output theory of cavities in the ultra-strong coupling regime: the case of a time-independent vacuum Rabi frequency
- Encircling an Exceptional Point
- Vibrational and electronic heating in nanoscale junctions
- A review of progress in the physics of open quantum systems: theory and experiment
- Observation of a Chiral State in a Microwave Cavity
- Phases of Wave Functions and Level Repulsion
- Chiral Coherent Perfect Absorption on Exceptional Surfaces
- Non-Hermitian engineering of terahertz light using exceptional points in electrically tuneable collective light-matter interactions
- Projective Hilbert space structures at exceptional points
- Self-organized synchronization of phonon lasers
- Synchronization dynamics of two nanomechanical membranes within a Fabry-Perot cavity
- Phase transitions in open quantum systems
- Phonon heat transport in cavity-mediated optomechanical nanoresonators
- Open quantum systems and Dicke superradiance
- Collective coupling of a macroscopic number of single-molecule magnets with a microwave cavity mode
- Analysis technique for exceptional points in open quantum systems and QPT analogy for the appearance of irreversibility
- Optical spectroscopy of molecular junctions: Nonequilibrium Green's functions perspective
- Non-Hermitian Hamiltonians for Linear and Nonlinear Optical Response: a Model for Plexcitons
- Flux-conserving diagrammatic formulation of optical spectroscopy of open quantum systems