Generation of quantum steering and interferometric power in the Dynamical Casimir Effect

TL;DR

This paper explores how the dynamical Casimir effect in superconducting waveguides can generate quantum correlations like EPR steering and interferometric power, with implications for quantum technologies.

Contribution

It demonstrates that non-zero squeezing in the dynamical Casimir effect can produce useful quantum correlations, even amid thermal noise, highlighting new resource generation methods.

Findings

Non-zero squeezing produces interferometric power increasing with thermal noise.

A certain squeezing threshold is needed to generate EPR steering.

Dynamical Casimir effect can serve as a resource for quantum technologies.

Abstract

We analyse the role of the dynamical Casimir effect as a resource for quantum technologies, such as quantum cryptography and quantum metrology. In particular, we consider the generation of Einstein-Podolsky-Rosen steering and Gaussian interferometric power, two useful forms of asymmetric quantum correlations, in superconducting waveguides modulated by superconducting quantum interferometric devices. We show that, while a certain value of squeezing is required to overcome thermal noise and give rise to steering, any non-zero squeezing produces interferometric power which in fact increases with thermal noise.