Quantum interference between independent reservoirs in open quantum systems

Abstract

When a quantum system interacts with multiple reservoirs, the environmental effects are usually treated in an additive manner. We show that this assumption breaks down for non-Markovian environments that have finite memory times. Specifically, we demonstrate that quantum interferences between independent environments can qualitatively modify the dynamics of the physical system. We illustrate this effect with a two level system coupled to two structured photonic reservoirs, discuss its origin using a non-equilibrium diagrammatic technique, and show an example when the application of this interference can result in an improved dark state preparation in a $\lambda$ system.

9 pages, 6 figures

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• Structured quantum collision models: generating coherence with thermal resources
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• Unidirectional Quantum Transport in Optically Driven $V$-type Quantum Dot Chains
• Impact of independent reservoirs on the quantum Zeno and anti-Zeno effects