Modulated Entanglement Evolution Via Correlated Noises

TL;DR

This paper explores how correlated classical noises influence the evolution of quantum entanglement between two spins, providing explicit solutions and demonstrating the potential to enhance or diminish entanglement through noise correlation.

Contribution

It derives a Markov master equation for entanglement dynamics under correlated noises and analyzes the effects on various initial states, including Bell and X states.

Findings

Correlated noises can both enhance and reduce entanglement.

Explicit solutions for entanglement evolution are obtained for key initial states.

Noise correlation significantly impacts entanglement dynamics.

Abstract

We study entanglement dynamics in the presence of correlated environmental noises. Specifically, we investigate the quantum entanglement dynamics of two spins in the presence of correlated classical white noises, deriving Markov master equation and obtaining explicit solutions for several interesting classes of initial states including Bell states and X form density matrices. We show how entanglement can be enhanced or reduced by the correlation between the two participating noises.