Full counting statistics for voltage
and dephasing probes

Heidi Förster

University of Geneva, Switzerland

Friday, May 5th  2006, 15:30
Seminar room F, Mathematical Physics, Sölvegatan 14A

We present a stochastic path integral method to calculate the full counting statistics of conductors with energy conserving dephasing probes and dissipative voltage probes. The approach is explained for the experimentally important case of a Mach-Zehnder interferometer, but is easily generalized to more complicated setups. For all geometries where dephasing may be modeled by a single one-channel dephasing probe we prove that our method yields the same full counting statistics as phase averaging over a slowly fluctuating phase.

Work in collaboration with S. Pilgram, P. Samuelsson and M. Buttiker