Generating strong squeezing in the dispersive regime of the quantum Rabi model

TL;DR

This paper proposes a protocol to generate significant squeezing of a light field mode strongly coupled to a two-level system in the dispersive regime, using time-dependent frequency changes to reduce quantum noise below the standard quantum limit.

Contribution

The paper introduces a novel protocol leveraging strong dispersive coupling and dynamic frequency modulation to achieve enhanced squeezing in light-matter systems.

Findings

Achieves squeezing below the standard quantum limit.

Effective even with realistic noise and imperfections.

Compatible with current experimental setups.

Abstract

We present a protocol to generate a large degree of squeezing of a boson (light) field mode strongly coupled to a two-level system in the dispersive regime. Our protocol exploits the strong dispersive coupling to introduce a time dependent frequency change of the boson field. With an appropriately timed sequence of sudden frequency changes, the quantum noise fluctuations in one quadrature of the field can be reduced well below the standard quantum limit, with a correspondingly increased uncertainty in the orthogonal quadrature. Even in the presence of realistic noise and imperfections, the protocol should be capable of generating substantial squeezing with present experimental capabilities.