Nonequilibrium Dephasing in an Electronic Mach-Zehnder Interferometer

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.

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

References in corpus (7)

• Direct measurement of the coherence length of edge states in the Integer Quantum Hall Regime
• Finite bias visibility of the electronic Mach-Zehnder interferometer
• Decoherence and single electron charging in an electronic Mach-Zehnder interferometer
• Decoherence and interactions in an electronic Mach-Zehnder interferometer
• Resonant dephasing in the electronic Mach-Zehnder interferometer
• The Behavior of Electronic Interferometers in the Non-Linear Regime
• Coherence oscillations in dephasing by non-Gaussian shot noise

Cited by in corpus (6)

• Dephasing in the electronic Mach-Zehnder interferometer at filling factor 2
• Edge Channel Interference Controlled by Landau Level Filling
• Exactly Solved Model for an Electronic Mach-Zehnder Interferometer
• Universality of Bias- and Temperature-induced Dephasing in Ballistic Electronic Interferometers
• Cross-correlation of two interacting conductors
• Electronic interferometer capacitively coupled to a quantum dot