Entanglement dynamics of an open moving-biparticle system driven by classical-field

TL;DR

This paper investigates how a classical external field influences the entanglement dynamics of a moving biparticle system coupled to a zero-temperature environment, revealing that classical driving can preserve entanglement and mitigate velocity and detuning effects.

Contribution

It provides analytical expressions for the entanglement dynamics of a moving biparticle system under classical driving, highlighting its role in entanglement protection.

Findings

Classical driving protects entanglement against environmental effects.

Classical driving eliminates the impact of qubit velocity on entanglement.

Classical driving reduces the effect of detuning on entanglement.

Abstract

In this work, the entanglement dynamics of a moving-biparticle system driven by an external classical field are investigated, where the moving-biparticle system is coupled with a zero temperature common environment. The analytical expressions of the density operator and the entanglement can be obtained by using the dressed-state basis when the total excitation number is one. We also discuss in detail the effects of different parameters on the entanglement dynamics. The results show that the classical driving can not only protect the entanglement, but also effectively eliminate the influence of the qubit velocity and the detuning on the quantum entanglement.