Stefano Roddaro, Luca Chirolli, Fabio Taddei, Marco Polini, Vittorio Giovannetti
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 di?erent 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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http://arxiv.org/abs/1212.6568
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