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 nonclassicality 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. © 2013 American Physical Society.
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Titolo: | Wigner function approach to single electron coherence in quantum Hall edge channels |
Autori: | |
Data di pubblicazione: | 2013 |
Rivista: | |
Handle: | http://hdl.handle.net/11567/941508 |
Appare nelle tipologie: | 01.01 - Articolo su rivista |