Engineering a thermal squeezed reservoir by system energy modulation

TL;DR

This paper demonstrates how energy-level modulation of atoms can turn a thermal reservoir into an effective squeezed reservoir, with persistent squeezing effects analyzed through a master equation beyond the rotating-wave approximation.

Contribution

It introduces a method to engineer a thermal reservoir as a squeezed reservoir via system energy modulation, extending analysis beyond the rotating-wave approximation.

Findings

Squeezing persists at long times with fast, strong modulation.

Master equation approach valid beyond RWA.

Potential realization with Rydberg atoms.

Abstract

We show that a thermal reservoir can effectively act as a squeezed reservoir on atoms that are subject to energy-level modulation. For sufficiently fast and strong modulation, for which the rotating-wave-approximation is broken, the resulting squeezing persists at long times. These effects are analyzed by a master equation that is valid beyond the rotating wave approximation. As an example we consider a two-level-atom in a cavity with Lorentzian linewidth, subject to sinusoidal energy modulation. A possible realization of these effects is discussed for Rydberg atoms.