Regensburg 2013 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 1: Quantum Dynamics, Decoherence and Quantum Information I

DY 1.3: Vortrag

Montag, 11. März 2013, 10:00–10:15, H39

Equation-of-motion method for full counting statistics: Steady-state superradiance — •Malte Vogl, Gernot Schaller, Eckehard Schöll, and Tobias Brandes — Institut für Theoretische Physik, TU Berlin, Berlin, Germany

For the multimode Dicke model in a transport setting that exhibits collective boson transmissions, we construct the equation of motion for the cumulant-generating function. Approximating the exact system of equations at the level of the cumulant-generating function and system operators at lowest order allows us to recover master equation results of the full counting statistics for certain parameter regimes at very low computational cost. The thermodynamic limit, which is not accessible with the master equation approach, can be derived analytically for different approximations.

Ref.: M.V., G. Schaller, E. Schöll, and T.Brandes, PRA 86, 033820 (2012)