Controlled generation of field squeezing with cold atomic clouds coupled to a superconducting transmission line resonator

TL;DR

This paper presents a method to generate controlled field squeezing using cold atomic clouds coupled to a superconducting resonator, enabling scalable quantum information processing with continuous variables.

Contribution

It introduces a novel approach for controlled field squeezing via magnetic coupling in cold atomic clouds near superconducting resonators, with tunable squeezing parameters.

Findings

Two-mode and single-mode squeezed states can be generated.

Squeezing degree and timing are tunable via external fields.

Potential for scalable on-chip quantum information processing.

Abstract

We propose an efficient method for controlled generation of field squeezing with cold atomic clouds trapped close to a superconducting transmission line resonator. It is shown that, based on the coherent strong magnetic coupling between the collective atomic spins and microwave fields in the transmission line resonator, two-mode or single mode field squeezed states can be generated through coherent control on the dynamics of the system. The degree of squeezing and preparing time can be directly controlled through tuning the external classical fields. This protocol may offer a promising platform for implementing scalable on-chip quantum information processing with continuous variables.