Equilibrium and nonequilibrium quantum correlations between two detectors in curved space time

TL;DR

This paper explores how quantum correlations between two qubits are affected by curved spacetime near a Kerr black hole, considering equilibrium and nonequilibrium conditions, and highlighting the influence of black hole parameters and spacetime structure.

Contribution

It provides a detailed analysis of quantum correlations in curved spacetime, emphasizing the effects of black hole mass, angular momentum, and local curvature on two-qubit systems.

Findings

Quantum correlations depend on spacetime structure near black holes.

Nonequilibrium conditions can enhance quantum correlations.

Black hole parameters significantly influence quantum information encoding.

Abstract

We investigate the equilibrium and nonequilibrium quantum information correlations encoded in two-qubit system (near the horizon of a Kerr black hole). We study the impact of mass and the angular momentum, and further the local curvature or accelerations on the behaviors of the quantum correlations between two qubits. We show the quantum information of two qubits is encoded in the space time structure. In nonequilibrium case, the nonequilibrium can also contribute to the correlations.