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Regensburg 2007 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 28: Transport - Poster Session

TT 28.34: Poster

Thursday, March 29, 2007, 14:00–17:45, Poster A

Full Counting Statistics from quantum trajectories — •Ansgar Pernice1 and Walter Strunz21Physikalisches Institut der Universität Freiburg, Herrmann-Herder-Str. 3,79104 Freiburg, Germany — 2Physikalisches Institut der Universität Freiburg, Herrmann-Herder-Str. 3,79104 Freiburg, Germany

Motivated by a recent experiment [1], we apply a quantum trajectory approach to the determination of the full counting statistics (FCS)of single-electron transport in a quantum dot.

The FCS reveals information about the initial state of the dot [2]. In the case of the steady state, our results coincide with the formulae given by Bagrets and Nazarov [3]. However, the FCS differs in the case of an initially full/empty dot and for short times.

Last but not least, we establish the connection between our approach and those based on counting fields in providing a new deriviation of the quantum-jump-representation, here for a fermionic environment.

[1] S. Gustavsson, R. Leturcq, B. Simovic, R. Schleser, T. Ihn, P. Studerus, and K. Ensslin, Phys. Rev. 96, 076605 (2006)

[2] H. Schaefers and W. T. Strunz, Phys. Rev. B 71, 075321 (2005).

[3] D. A. Bagrets and Yu. V. Nazarov, Phys. Rev. B 67, 085316 (2003).

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