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arXiv · 1212.6568

Coherent edge mixing and interferometry in quantum Hall bilayers

Stefano Roddaro·Luca Chirolli·Fabio Taddei·Marco Polini·Vittorio Giovannetti
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Abstract

We discuss the implementation of a beam splitter for electron waves in a quantum Hall bilayer. Our architecture exploits inter-layer tunneling to mix edge states belonging to different layers. We discuss the basic working principle of the proposed coherent edge mixer, possible interferometric implementations based on existing semiconductor-heterojunction technologies, and advantages with respect to canonical quantum Hall interferometers based on quantum point contacts.

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Stefano Roddaro, Luca Chirolli, Fabio Taddei, Marco Polini, Vittorio Giovannetti. 2012-12-28. Coherent edge mixing and interferometry in quantum Hall bilayers. https://doi.org/10.1103/physrevb.87.075321

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