Detection of emitter-resonator coupling strength in quantum Rabi model via an auxiliary resonator
arXiv:1806.01971 · doi:10.1103/PhysRevA.98.043812
Abstract
In this paper, we propose a theoretical scheme to detect the emitter-resonator coupling strength in the ultra-strong coupling regime in the quantum Rabi model via introducing an auxiliary resonator. We demonstrate the total system as a two-mode Rabi model and obtain the ground state by the transformed rotating wave approximation, which is shown to be superior to the usually applied rotating wave approximation. Here, the coupling strength is detected by monitoring the average excitation number in the auxiliary resonator and the sensitivity of the detection scheme is discussed analytically.
arXiv comment5 pages, accepted by PRA
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