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Journal Articles Physical Review B: Condensed Matter and Materials Physics (1998-2015) Year : 2013

Wigner function approach to single electron coherence in quantum Hall edge channels

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Abstract

Recent electron quantum optics experiments performed with on-demand single electron sources call for a mixed time/frequency approach to electronic quantum coherence. Here, we present a Wigner function representation of first-order electronic coherence and show that it provides a natural visualization of the excitations emitted by recently demonstrated single electron sources. It also gives a unified perspective on single particle and two particle interferometry experiments. In particular, we introduce a non-classicality criterion for single electron coherence and discuss it in the context of Mach-Zehnder interferometry. Finally, the electronic Hanbury Brown and Twiss and the Hong-Ou-Mandel experiments are interpreted in terms of overlap of Wigner function, thus connecting them to signal processing.

Dates and versions

ensl-00903723 , version 1 (12-11-2013)

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Cite

Dario Ferraro, Alexandre Feller, Arnaud Ghibaudo, Etienne Thibierge, Erwann Bocquillon, et al.. Wigner function approach to single electron coherence in quantum Hall edge channels. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2013, 88, pp.205303. ⟨10.1103/PhysRevB.88.205303⟩. ⟨ensl-00903723⟩
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