Entanglement of Open Quantum Systems in Noninertial Frames

TL;DR

This paper investigates how different noise channels affect entanglement in noninertial quantum systems, revealing conditions for entanglement sudden death and methods to distinguish between moving and stationary frames.

Contribution

It analyzes the impact of various decoherence channels on Unruh effect-induced entanglement, identifying configurations that prevent entanglement loss and enable frame discrimination.

Findings

Entanglement sudden death depends on channel combinations.

Certain channel configurations can prevent entanglement sudden death.

Channels can be used to distinguish between moving and stationary frames.

Abstract

We study the effects of decoherence on the entanglement generated by Unruh effect in accelerated frames by using various combinations of an amplitude damping channel, a phase damping channel and a depolarizing channel in the form of multilocal and collective environments. Using concurrence as entanglement quantifier, we show that the occurrence of entanglement sudden death (ESD) depends on different combinations of the channels. The ESD can be avoided under a particular configuration of the channels. We show that the channels can be used to distinguish between a moving and a stationary frame.