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Open Quantum Systems Decoherence

Environment-assisted quantum transport and mobility edges

arXiv

Authors: Donny Dwiputra, Freddy P. Zen

Year

2020

Paper ID

18335

Status

Preprint

Abstract Read

~2 min

Abstract Words

110

Citations

N/A

Abstract

Environment-assisted quantum transport (ENAQT) is a unique situation where environmental noise can, counterintuitively, enhance the transport of an open quantum system. In this paper, we investigate how the presence of a one-dimensional single-particle mobility edge can generate strong ENAQT. For this purpose, we study the energy current of a generalized Aubry-André-Harper (AAH) tight binding model coupled at its edges to spin baths of differing temperature and dephasing noise along the system. We find that the ENAQT increases by orders of magnitude and depends on the number of localized eigenstates and disorder strength nonmonotonically. We show that this enhancement is the result of the cooperation between population uniformization and localization.

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This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
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Environment-assisted quantum transport (ENAQT) is a unique situation where environmental noise can, counterintuitively, enhance the transport of an open quantum system.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2012.09337 [2] arXiv https://arxiv.org/abs/2012.09337 [3] Publisher https://arxiv.org/abs/2012.09337

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