Entanglement generation through local field and quantum dissipation

TL;DR

This paper shows that local driving combined with environmental dissipation can generate entanglement in Gaussian systems, with optimal control pulses enhancing efficiency and minimizing energy side effects.

Contribution

It introduces a method to generate entanglement through local driving aided by dissipation, optimized via control techniques for effectiveness and minimal energy impact.

Findings

Weak to moderate dissipation enables entanglement with local driving.

Optimal control pulses improve entanglement generation efficiency.

Simple pulse shapes often fail or cause excess energy deposition.

Abstract

Entanglement in a Gaussian two-mode system can be generated by local driving if additional non-local features are introduced to the dynamics. We demonstrate that weak to moderate ohmic friction arising from a dissipative environment can enable entanglement generation in a driven system. This synergy of driving and dissipation is highly sensitive to the pulse shape; several simple pulse shapes fail to produce this effect at all or deposit large amounts of energy in the system as a side effect. Complex pulse shapes, determined by optimal control techniques, however, are effective without detrimental side effects.