Scattering Approach to Counting Statistics in Quantum Pumps

Details Scattering Approach to Counting Statistics in Quantum Pumps Scattering Approach to Counting Statistics in Quantum Pumps

2003-01-07

arxiv.org/abs/cond-mat/0301075v2

Phys. Rev. B 68, 155304 (2003)

Physics

Condensed Matter

8 pages (minor corrections)

Scientific paper

10.1103/PhysRevB.68.155304

We consider the Fermi gas in a non-equilibrium state obtained by applying an arbitrary time-dependent potential to the Fermi gas in the ground state. We present a general method that gives the quantum statistics of any single-particle quantity, such as the charge, total energy or momentum, in this non-equilibrium state. We show that the quantum statistics may be found from the solution of a matrix Riemann-Hilbert problem. We use the method to study how the finite measuring time modifies the distribution of the charge transferred through a biased quantum point contact.

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