Quantum decoherence in noninertial frames

TL;DR

This paper investigates how quantum decoherence and entanglement loss interact in noninertial frames, revealing that acceleration influences entanglement sudden death and its relation to decoherence effects.

Contribution

First study of quantum decoherence effects in noninertial frames, analyzing the interplay with the Unruh effect and entanglement dynamics.

Findings

Decoherence and entanglement loss influence each other significantly.

Sudden death of entanglement can occur at any acceleration for the total system.

For Rob's qubit, sudden death occurs only beyond a critical acceleration.

Abstract

Quantum decoherence, which appears when a system interacts with its environment in an irreversible way, plays a fundamental role in the description of quantum-to-classical transitions and has been successfully applied in some important experiments. Here, we study the decoherence in noninertial frames for the first time. It is shown that the decoherence and loss of the entanglement generated by the Unruh effect will influence each other remarkably. It is interesting to note that in the case of the total system under decoherence, the sudden death of entanglement may appear for any acceleration. However, in the case of only Rob's qubit underging decoherence sudden death may only occur when the acceleration parameter is greater than a "critical point."