13 September 2022 Tue 4 pm

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Environment-assisted quantum transport (ENAQT) is a unique situation where dephasing noise may, counterintuitively, enhance the transport of an open quantum system. Here, we investigate how the presence of a one-dimensional single-particle mobility edge can generate strong ENAQT by orders of magnitude. For this purpose, we study a disordered lattice which exhibit energy-dependent mobility edges and subject to dephasing and thermal baths. In addition, we propose a disorder-free one-dimensional model which manifests an exact mobility edge using a variation of the Wannier-Stark lattice. For strong field strengths the Wannier-Stark ladder is recovered, and, in contrast to the localization of a usual Stark lattice, here the localization regime also extends to weak fields.

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