Regensburg 2007 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 32: Fluctuations and Noise
TT 32.2: Vortrag
Donnerstag, 29. März 2007, 18:15–18:30, H18
Noise and Full Counting Statistics in Coupled Quantum Dots — Ramon Aguado2, •Tobias Brandes1, Clive Emary1, Gerold Kießlich1, David Marcos2, Eckehard Schöll1, and Philipp Zedler1 — 1Institut für Theor. Physik, TU Berlin — 2Departamento de Teoria de la Materia Condensada, CSIC, Madrid
We discuss shot noise and higher current cumulants in quantum dots [1] with internal couplings (such as double quantum dots) by calculating the Full Counting Statistics within a master equation approach in the limit of strong bias and strong Coulomb blockade. We present results for models that include a coupling to internal relaxation processes (dissipation due to phonons) and exhibit interesting limiting cases such as quantum Zeno localization due to strong coupling to the drain reservoir [2].
[1] G. Kießlich, P. Samuelsson, A. Wacker, and E. Schöll, Phys. Rev. B 73, 033312 (2006). [2] T. Brandes, Phys. Stat. Sol. B 243, 2293 (2006).