Entangling moving cavities in non-inertial frames

TL;DR

This paper proposes a scheme for storing quantum information in moving cavities within flat space-time, demonstrating that such systems can protect entanglement despite relativistic motion, and shows it is possible to generate maximally entangled states.

Contribution

It introduces a novel method for protecting quantum entanglement in moving cavities and details how to establish and produce maximally entangled states in relativistic settings.

Findings

Quantum information in moving cavities is protected from degradation.

It is possible to establish entanglement between moving cavities.

Maximally entangled states can be produced in principle.

Abstract

An open question in the field of relativistic quantum information is how parties in arbitrary motion may distribute and store quantum entanglement. We propose a scheme for storing quantum information in the field modes of cavities moving in flat space-time and analyze it in a quantum field theoretical framework. In contrast to previous work that found entanglement degradation between observers moving with uniform acceleration, we find the quantum information in such systems is protected. We further discuss a method for establishing the entanglement in the first place and show that in principle it is always possible to produce maximally entangled states between the cavities.