Coherence of Single Electron Sources from Mach-Zehnder Interferometry

Details Coherence of Single Electron Sources from Mach-Zehnder Interferometry Coherence of Single Electron Sources from Mach-Zehnder Interferometry

2011-03-11

arxiv.org/abs/1103.2260v1

Phys. Rev. B 84, 081303(R) (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.84.081303

A new type of electron sources has emerged which permits to inject particles in a controllable manner, one at a time, into an electronic circuit. Such single electron sources make it possible to fully exploit the particles' quantum nature. We determine the single-particle coherence length from the decay of the Aharonov-Bohm oscillations as a function of the imbalance of a Mach-Zehnder interferometer connected to a single electron source. The single-particle coherence length is of particular importance as it is an intrinsic property of the source in contrast to the dephasing length.

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