Nonlocal fluctuations and control of dimer entanglement dynamics

TL;DR

This paper explores how background quantum fluctuations influence entanglement dynamics in a bipartite molecular system, revealing control mechanisms and non-Markovian effects in Markovian environments.

Contribution

It demonstrates that background QED fluctuations can induce non-Markovian-like entanglement behavior in Markovian environments, providing new insights into entanglement control and dynamics.

Findings

Background fluctuations can induce non-Markovian effects in Markovian environments.

Entanglement exhibits collapse-revival behavior even without collective decay.

Laser control can manipulate early stage disentanglement and delayed entanglement generation.

Abstract

We report on the dissipative dynamics of an entangled, bipartite interacting system. We show how to induce and control the so-called early stage disentanglement (and the delayed entanglement generation) dynamics by means of a driving laser field. We demonstrate that some of the features currently associated with pure non-Markovian effects in such entanglement behavior can actually take place in Markovian environments if background noise QED fluctuations are considered. We illustrate this for the case of a dimer interacting molecular system for which emission rates, interaction strength, and radiative corrections have been previously measured. We also show that even in the absence of collective decay mechanisms and qubit-qubit interactions, the entanglement still exhibits collapse-revival behavior. Our results indicate that zero point energy fluctuations should be taken into account when formulating precise entanglement dynamics statements.