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- W3143338222 abstract "We consider theoretically an electronic Mach-Zehnder interferometer constructed from quantum Hall edge channels and quantum point contacts, fed with single electrons from a dynamic quantum dot source. By considering the energy dependence of the edge-channel guide centers, we give an account of the phase averaging in this setup that is particularly relevant for the short, high-energy wave packets injected by this type of electron source. We present both analytic and numerical results for the energy-dependent arrival time distributions of the electrons and also give an analysis of the delay times associated with the quantum point contacts and their effects on the interference patterns. A key finding is that, contrary to expectation, maximum visibility requires the interferometer arms to be different in length, with an offset of up to a micron for typical parameters. By designing interferometers that incorporate this asymmetry in their geometry, phase-averaging effects can be overcome such that visibility is only limited by other incoherent mechanisms." @default.
- W3143338222 created "2021-04-13" @default.
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- W3143338222 date "2021-07-30" @default.
- W3143338222 modified "2023-09-27" @default.
- W3143338222 title "Asymmetric arms maximize visibility in hot-electron interferometers" @default.
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- W3143338222 doi "https://doi.org/10.1103/physrevb.104.035436" @default.
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