Quantum memory in non-inertial frames

TL;DR

This paper investigates how quantum memory affects entanglement in non-inertial frames under various noise channels, showing that quantum memory can prevent entanglement sudden death caused by acceleration effects.

Contribution

It demonstrates that quantum memory can mitigate entanglement loss and prevent sudden death in non-inertial frames, a novel insight into quantum information preservation.

Findings

Quantum memory compensates entanglement loss due to the Unruh effect.

Sudden death of entanglement disappears at high memory levels.

Entanglement is maximized with increased quantum memory.

Abstract

We study the effect of quantum memory in non-inertial frames under the influence of amplitude damping, depolarizing, phase flip and bit-phase flip channels. It is shown that the entanglement of initial state is heavily influenced by quantum correlations. It is seen that quantum memory compensates the loss of entanglement generated caused by the Unruh effect. It is interesting to note that the sudden death of entanglement disappears for any acceleration for higher values of memory. Therefore, it is possible to avoid ESD in non-inertial frames due to the presence of quantum memory. Furthermore, the degree of entanglement is enhanced as we increase the degree of memory and it maximizes for maximum correlations.