Generation of entangled light via dynamical Casimir effect

TL;DR

This paper explores how periodic refractive index modulations can generate entangled light via the dynamical Casimir effect, analyzing the impact of losses and environmental factors on entanglement detection.

Contribution

It introduces a model incorporating losses to study entanglement generation and measurement in the dynamical Casimir effect, highlighting conditions under which entanglement persists.

Findings

Entanglement can be generated despite environmental losses.

Shared environment reduces the destructive impact on entanglement.

Periodic modulation effectively excites vacuum fluctuations.

Abstract

This paper addresses the excitation of vacuum fluctuations of the electromagnetic field through periodic modulations of a refractive index and the possibility of using entanglement as a distinctive marker of the quantum nature of the phenomenon. It introduces a lossy environment and analyses its implications on the possibility of generating such an effect and measuring entanglement, concluding that it is not entirely destructive when the produced particles share the same environment.