We consider the electronic analog of the quantum optics Hong-Ou-Mandel interferometer, in a realistic condensed matter device based on single electron emission in chiral edge states. For electron-electron collisions, we show that the measurement of the zero-frequency current correlations at the output of a quantum point contact produces a dip giving precious information on the electronic wavepackets and coherence. As a feature truly unique to Fermi statistics and condensed matter, we show that two-particle interferences between electron and hole in the Fermi sea can produce a positive peak in the current correlations, which we study for realistic experimental parameters.
@article{arxiv.1204.6205,
title = {Electron and hole Hong-Ou-Mandel interferometry},
author = {T. Jonckheere and J. Rech and C. Wahl and T. Martin},
journal= {arXiv preprint arXiv:1204.6205},
year = {2012}
}