Nonequilibrium Dephasing in an Electronic Mach-Zehnder Interferometer

Details Nonequilibrium Dephasing in an Electronic Mach-Zehnder Interferometer Nonequilibrium Dephasing in an Electronic Mach-Zehnder Interferometer

2007-12-13

arxiv.org/abs/0712.2148v3

Phys. Rev. Lett. 100, 196807 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures; some typos are corrected; published version

Scientific paper

10.1103/PhysRevLett.100.196807

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 $\pi$, in good agreement with experimental data.

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