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arXiv · 1507.00816

Transient unidirectional energy flow and diode-like phenomenon induced by non-Markovian environments

Jun Jing·Dvira Segal·Baowen Li·Lian-Ao Wu
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Abstract

Relying on an exact time evolution scheme, we identify a novel transient energy transfer phe- nomenon in an exactly-solvable quantum microscopic model consisting of a three-level system coupled to two non-Markovian zero-temperature bosonic baths through two separable quantum channels. The dynamics of this model can be solved exactly using the quantum-state-diffusion equation formalism, demonstrating finite intervals of unidirectional energy flow across the system, typically, from the non-Markovian environment towards the more Markovian bath. Furthermore, when introducing a spatial asymmetry into the system, an analogue of the rectification effect is realized. In the long time limit, the dynamics arrives at a stationary state and the effects recede. Understanding temporal characteristics of directional energy flow will aid in designing microscopic energy transfer devices.

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Jun Jing, Dvira Segal, Baowen Li, Lian-Ao Wu. 2015-07-03. Transient unidirectional energy flow and diode-like phenomenon induced by non-Markovian environments. https://arxiv.org/abs/1507.00816

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