Optical and atomic stochastic resonances in the driven dissipative Jaynes-Cummings model

TL;DR

This paper investigates stochastic resonance in the driven dissipative Jaynes-Cummings model, revealing quantum SR can be induced by vacuum fluctuations and comparing semiclassical and quantum behaviors.

Contribution

It provides a systematic analysis of optical and atomic stochastic resonances in both semiclassical and quantum frameworks, highlighting the role of vacuum fluctuations.

Findings

SR occurs simultaneously for optical and atomic degrees of freedom

Quantum SR can be induced by vacuum fluctuations at zero temperature

Qualitative features of semiclassical and quantum SR are similar

Abstract

In this work we study the stochastic resonance (SR) effect in a driven dissipative Jaynes-Cummings model. The SR effect is systematically studied in the semiclassical and full quantum frameworks and in both cases we find that SRs simultaneously occur for the optical and atomic freedoms. In particular, at zero temperature quantum SR can be induced merely by vacuum fluctuations. The qualitative features of semiclassical SR and quantum SR are similar, but the parameter region of quantum SR are shifted from the semiclassical region due to the widely-used factorization in obtaining semiclassical equations of motion. Our results provide a theoretical basis for experimentally observing and studying the SR phenomenon of the Jaynes-Cummings model in the quantum regime.