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arXiv · 1607.00203

Transport, shot noise, and topology in AC-driven dimer arrays

Michael Niklas·Mónica Benito·Sigmund Kohler·Gloria Platero
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Abstract

We analyze an AC-driven dimer chain connected to a strongly biased electron source and drain. It turns out that the resulting transport exhibits fingerprints of topology. They are particularly visible in the driving-induced current suppression and the Fano factor. Thus, shot noise measurements provide a topological phase diagram as a function of the driving parameters. The observed phenomena can be explained physically by a mapping to an effective time-independent Hamiltonian and the emergence of edge states. Moreover, by considering quantum dissipation, we determine the requirements for the coherence properties in a possible experimental realization. For the computation of the zero-frequency noise, we develop an efficient method based on matrix-continued fractions.

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Michael Niklas, Mónica Benito, Sigmund Kohler, Gloria Platero. 2016-07-01. Transport, shot noise, and topology in AC-driven dimer arrays. https://doi.org/10.1088/0957-4484%2F27%2F45%2F454002

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