Dynamical resurrection of the visibility in a Mach-Zehnder interferometer

Details Dynamical resurrection of the visibility in a Mach-Zehnder interferometer Dynamical resurrection of the visibility in a Mach-Zehnder interferometer

2011-03-21

arxiv.org/abs/1103.4046v1

Phys. Rev. Lett. 107, 076803 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevLett.107.076803

We study a single-electron pulse injected into the chiral edge-state of a quantum Hall device and subject to a capacitive Coulomb interaction. We find that the scattered multi-particle state remains unentangled and hence can be created itself by a suitable classical voltage-pulse $V(t)$. The application of the inverse pulse $-V(-t)$ corrects for the shake-up due to the interaction and resurrects the original injected wave packet. We suggest an experiment with an asymmetric Mach-Zehnder interferometer where the application of such pulses manifests itself in an improved visibility.

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