Single-electron quantum tomography in quantum Hall edge channels

The recent demonstration of an on demand single electron source [1,2] has opened the way to a new generation of``electron quantum optics'' experiments aimed at preparing, manipulating and measuring coherent single electron excitations propagating in ballistic conductors such as the edge channels of a 2DEG in the integer quantum Hall regime. In this talk, I will describe a proposal [3] for measuring single electron coherence using an Hanbury Brown and Twiss interferometer. This quantum tomography protocol could be used to characterize single electron sources and to perform quantitative studies of decoherence.\\[4pt] [1] Science 316, 1169 (2007)\\[0pt] [2] Phys. Rev. B 82, 201309 (2010)\\[0pt] [3] New Journal of Physics 13, 093007 (2011)