Squeezing in a nonlocal photon fluid

TL;DR

This paper predicts that photon fluids in nonlocal nonlinear media can exhibit classical spontaneous squeezing, revealing new quantum properties and potential applications in metrology and quantum gravity analogues.

Contribution

It introduces the concept of classical squeezing in photon fluids within nonlocal media using Gamow vectors, a novel theoretical insight.

Findings

Quadratures of a coherent state get squeezed in nonlocal media

A maximal squeezing power exists in the system

Results apply to both temporal and spatial propagation in highly nonlocal regimes

Abstract

Quantum fluids of light are an emerging tool employed in quantum many-body physics. Their amazing properties and versatility allow using them in a wide variety of fields including gravitation, quantum information and simulation. However the implications of the quantum nature of light in the nonlinear optical propagation are still missing many features. We theoretically predict classical spontaneous squeezing of a photon fluid in a nonlocal nonlinear medium. By using the so called Gamow vectors, we show that the quadratures of a coherent state get squeezed and that a maximal squeezing power exists. Our analysis holds true for temporal and spatial optical propagation in highly nonlocal regime. These results open a new scenario in quantum photon fluids and may lead to novel applications in fields like metrology and analogues of quantum gravity.