Phys. Rev. Lett. 100, 196807 (2008) [4 pages]Nonequilibrium Dephasing in an Electronic Mach-Zehnder Interferometer
See accompanying Physics Focus We study nonequilibrium dephasing in an electronic Mach-Zehnder interferometer. We demonstrate that the shot noise at the beam splitter of the interferometer generates an ensemble of nonequilibrium electron density configurations and that electron interactions induce configuration-specific phase shifts of an interfering electron. The resulting dephasing exhibits two characteristic features, a lobe pattern in the visibility and phase jumps of π, in good agreement with experimental data. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.196807
DOI:
10.1103/PhysRevLett.100.196807
PACS:
85.35.Ds, 03.65.Yz, 72.70.+m, 73.23.−b
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