Isotropic Phase-Number Squeezing and Macroscopic Quantum Coherence

TL;DR

This paper introduces a new isotropic phase-number squeezing master equation that enhances the coherence of quantum superpositions in the presence of a specially squeezed bath, outperforming traditional thermal or anisotropic baths.

Contribution

It proposes a novel isotropic phase-number squeezing master equation and demonstrates its effectiveness in preserving quantum coherence.

Findings

Isotropic squeezing improves coherence persistence.

Enhanced quantum coherence compared to thermal baths.

Better performance than anisotropic squeezed baths.

Abstract

A new master equation performing isotropic phase-number squeezing is suggested. The phase properties of coherent superpositions are analyzed when the state evolves in presence of a bath with fluctuations squeezed in this isotropic way. We find that such a reservoir greatly improves persistence of coherence with respect to either a customary thermal bath, or to an anisotropically squeezed phase-sensitive bath.