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

Dario Ferraro 1 Alexandre Feller 1 Arnaud Ghibaudo 1 Etienne Thibierge 1 Erwann Bocquillon 2 Gwendal Fève 2 Charles Grenier 3 Pascal Degiovanni 1, *
* Auteur correspondant
1 Phys-ENS - Laboratoire de Physique de l'ENS Lyon
2 LPA - Laboratoire Pierre Aigrain
3 CPHT - Centre de Physique Théorique [Palaiseau]
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.
keyword : quantum transport quantum Hall e ect quantum coherence
Type de document :
Article dans une revue
Physical Review B : Condensed matter and materials physics, American Physical Society, 2013, 88, pp.205303. 〈10.1103/PhysRevB.88.205303〉
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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00903723
Contributeur : Pascal Degiovanni <>
Soumis le : mardi 12 novembre 2013 - 20:25:21
Dernière modification le : mercredi 25 avril 2018 - 10:44:18

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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, American Physical Society, 2013, 88, pp.205303. 〈10.1103/PhysRevB.88.205303〉. 〈ensl-00903723〉

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