Dynamical Casimir Effect in Quantum Information Processing

TL;DR

This paper explores how the dynamical Casimir effect impacts quantum information processing, revealing it as a fundamental limit and discussing strategies to mitigate its effects for ultrafast quantum gates.

Contribution

It establishes a link between the dynamical Casimir effect and quantum communication performance in the ultrastrong coupling regime, highlighting the need for new quantum gate schemes.

Findings

DCE limits quantum communication and computation performance

Strategies to mitigate DCE effects are proposed

Ultrafast quantum gates require novel implementation schemes

Abstract

We demonstrate, in the regime of ultrastrong matter-field coupling, the strong connection between the dynamical Casimir effect (DCE) and the performance of quantum information protocols. Our results are illustrated by means of a realistic quantum communication channel and show that the DCE is a fundamental limit for quantum computation and communication and that novel schemes are required to implement ultrafast and reliable quantum gates. Strategies to partially counteract the DCE are also discussed.