Spontaneous emission in a quantum system driven by the resonant field beyond the rotating wave approximation

TL;DR

This paper investigates how spontaneous emission behaves in a quantum system driven by a resonant field beyond the rotating wave approximation, revealing conditions for emission suppression and significant parameter changes.

Contribution

It provides a detailed analysis of spontaneous emission without RWA and identifies conditions for emission suppression in low-frequency driving fields.

Findings

Spontaneous emission can be suppressed under specific conditions.

Parameters of the effect differ significantly from RWA predictions.

A physical system where these effects are observable is described.

Abstract

Quasi-stationary states of the quantum system in the driving resonant field are considered without rotating wave approximation. Conditions under which the spontaneous emission could be suppressed in this system are investigated in the special case when the frequency of the driving field is essentially less than the frequency of spontaneous emission. It is shown that the characteristic parameters of the effect are substantially changed in comparison with the results corresponding to RWA. The real physical system for which the considered effects could be observed is described.