Quantum teleportation, entanglement, and Bell nonlocality in Unruh channel

TL;DR

This paper investigates how the Unruh effect, caused by relativistic acceleration, influences quantum correlations like teleportation, entanglement, and Bell nonlocality in a bipartite Dirac field system, revealing decoherence effects.

Contribution

It characterizes the Unruh channel using Kraus operators and analyzes its impact on quantum correlations between inertial and accelerated observers.

Findings

Unruh channel reduces quantum entanglement and teleportation fidelity.

Bell inequality violations are suppressed by the Unruh effect.

Quantum correlations are degraded due to relativistic acceleration.

Abstract

Decoherence is an unavoidable phenomenon that results from the interaction of the system with its surroundings. The study of decoherence due to the relativistic effects has the fundamental importance. The Unruh effect is observed by the relativistically accelerator observer. The unruh effect acts as a quantum channel and we call it the Unruh Channel. The Unruh channel can be characterize by providing its Kraus representation. We consider the bipartite scheme in which the quantum information is shared between an inertial observer (Alice) and an accelerated observer (Rob) in the case of Dirac field. We will show that this channel reduces the common quantum information between the two observers. In this work we will study the effects of the Unruh channel on various facets of quantum correlations, such as the quantum teleportation, entanglement, and Bell inequality violations for a Dirac field mode.