Nonequilibrium dephasing in an electronic Mach-Zehnder interferometer |
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Authors: | Youn Seok-Chan Lee Hyun-Woo Sim H-S |
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Institution: | Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, Korea. |
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Abstract: | 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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