Regimes of Cavity-QED under Incoherent Excitation: From Weak to Deep Strong Coupling
arXiv:2112.08917 · doi:10.1103/PhysRevResearch.4.023048
Abstract
The prototypical system constituted by a two-level atom interacting with a quantized single-mode electromagnetic field is described by the quantum Rabi model (QRM). The QRM is potentially valid at any light-matter interaction regime, ranging from the weak (where the decay rates exceeds the coupling rate) to the deep strong coupling (where the interaction rate exceeds the bare transition frequencies of the subsystems). However, when reaching the ultrastrong coupling regime, several theoretical issues may prevent the correct description of the observable dynamics of such a system: (i) the standard quantum optics master equation fails to correctly describe the interaction of this system with the reservoirs; (ii) the correct output photon rate is no longer proportional to the intracavity photon number; and (iii) the appears to violate gauge invariance. Here, we study the photon flux emission rate of this system under the incoherent excitation of the two-level atom for any light-matter interaction strength, and consider different effective temperatures. The dependence of the emission spectra on the coupling strength is the result of the interplay between energy levels, matrix elements of the observables, and the density of states of the reservoirs. Within this approach, we also study the occurence of light-matter decoupling in the deep strong coupling regime, and show how all of the obtained results are gauge invariant.
25 pages, 21 figures
References in corpus (11)
- QuTiP 2: A Python framework for the dynamics of open quantum systems
- Beyond the Jaynes-Cummings model: circuit QED in the ultrastrong coupling regime
- Observation of the Bloch-Siegert Shift in a Qubit-Oscillator System in the Ultrastrong Coupling Regime
- High Cooperativity Cavity QED with Magnons at Microwave Frequencies
- Ultra-Strong Light-Matter Coupling Regime with Polariton Dots
- Multiple Rabi Splittings under Ultra-Strong Vibrational Coupling
- Ultrastrong Coupling in the Near-field of Complementary Split Ring Resonators
- Luminescence Spectra of Quantum Dots in Microcavities. II. Fermions
- Ultra-Strong Light-Matter Coupling in Deeply Subwavelength THz LC resonators
- Quantized quasinormal mode description of non-linear cavity QED effects from coupled resonators with a Fano-like resonance
- Photon-Dressed Bloch-Siegert Shift in an Ultrastrongly Coupled Circuit Quantum Electrodynamical System
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