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arXiv · 1101.4391

Theory of non-equilibrium electronic Mach-Zehnder interferometer

Martin Schneider·Dmitry A. Bagrets·Alexander D. Mirlin
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Abstract

We develop a theoretical description of interaction-induced phenomena in an electronic Mach-Zehnder interferometer formed by integer quantum Hall edge states (with \nu =1 and 2 channels) out of equilibrium. Using the non-equilibrium functional bosonization framework, we derive an effective action which contains all the physics of the problem. We apply the theory to the model of a short-range interaction and to a more realistic case of long-range Coulomb interaction. The theory takes into account interaction-induced effects of dispersion of plasmons, charging, and decoherence. In the case of long-range interaction we find a good agreement between our theoretical results for the visibility of Aharonov-Bohm oscillations and experimental data.

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Martin Schneider, Dmitry A. Bagrets, Alexander D. Mirlin. 2011-01-23. Theory of non-equilibrium electronic Mach-Zehnder interferometer. https://doi.org/10.1103/physrevb.84.075401

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