Two-photon-interaction effects in the bad-cavity limit
- URL: http://arxiv.org/abs/2007.07844v2
- Date: Mon, 11 Sep 2023 16:25:15 GMT
- Title: Two-photon-interaction effects in the bad-cavity limit
- Authors: Nicol\`o Piccione, Simone Felicetti, Bruno Bellomo
- Abstract summary: We study a damped quantum harmonic oscillator interacting with $N$ two-level systems via a two-photon coupling in the so-called bad-cavity limit.
We have succeeded in applying a recently developed adiabatic elimination technique to derive an effective master equation for the two-level systems.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Various experimental platforms have proven to be valid testbeds for the
implementation of nondipolar light-matter interactions, where atomic systems
and confined modes interact via two-photon couplings. Here, we study a damped
quantum harmonic oscillator interacting with $N$ two-level systems via a
two-photon coupling in the so-called bad-cavity limit, in the presence of
finite-temperature baths and coherent and incoherent drivings. We have
succeeded in applying a recently developed adiabatic elimination technique to
derive an effective master equation for the two-level systems, presenting two
fundamental differences compared to the case of a dipolar interaction: an
enhancement of the two-level systems spontaneous-like emission rate, including
a thermal contribution and a quadratic term in the coherent driving, and an
increment of the effective temperature perceived by the two-level systems.
These differences give rise to striking effects in the two-level systems
dynamics, including a faster generation of steady-state coherence and a richer
dependence on temperature of the collective effects, which can be made stronger
at higher temperature.
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