System-environment dynamics of X-type states in noninertial frames

TL;DR

This paper explores how noninertial frames and different quantum channels affect entanglement dynamics, revealing distinct behaviors of entanglement transfer, sudden death, and environment effects in such systems.

Contribution

It provides a detailed analysis of system-environment entanglement dynamics in noninertial frames, highlighting differences between amplitude damping and phase damping channels.

Findings

Amplitude damping causes entanglement transfer and damage by Unruh radiation.

System-environment entanglement peaks then declines with decay parameter.

Thermal fields from Unruh effect can induce entanglement sudden death.

Abstract

The system-environment dynamics of noninertial systems is investigated. It is shown that for the amplitude damping channel: (i) the biggest difference between the decoherence effect and the Unruh radiation on the dynamics of the entanglement is the former only leads to entanglement transfer in the whole system, but the latter damages all types of entanglement; (ii) the system-environment entanglement increases and then declines, while the environment-environment entanglement always increases as the decay parameter $p$ increases; and (iii) the thermal fields generated by the Unruh effect can promote the sudden death of entanglement between the subsystems while postpone the sudden birth of entanglement between the environments. It is also found that there is no system-environment and environment-environment entanglements when the system coupled with the phase damping environment.