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.
@article{arxiv.1103.4046,
title = {Dynamical resurrection of the visibility in a Mach-Zehnder interferometer},
author = {A. V. Lebedev and G. Blatter},
journal= {arXiv preprint arXiv:1103.4046},
year = {2011}
}