Open Quantum Systems in Noninertial Frames

TL;DR

This paper investigates how different types of decoherence affect entanglement generated by the Unruh effect in noninertial frames, revealing that decoherence can cause entanglement sudden death regardless of acceleration.

Contribution

It provides a detailed analysis of decoherence effects on Unruh-induced entanglement, highlighting conditions for entanglement sudden death and unexpected entanglement increase.

Findings

Entanglement sudden death occurs regardless of acceleration under phase flip and phase damping.

Large acceleration leads to early sudden death in depolarizing environments.

Entanglement can increase in highly decohered phase flip channels.

Abstract

We study the effects of decoherence on the entanglement generated by Unruh effect in noninertial frames by using bit flip, phase damping and depolarizing channels. It is shown that decoherence strongly influences the initial state entanglement. The entanglement sudden death can happens irrespective of the acceleration of the noninertial frame under the action of phase flip and phase damping channels. It is investigated that an early sudden death happens for large acceleration under the depolarizing environment. Moreover, the entanglement increases for a highly decohered phase flip channel.