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TT: Fachverband Tiefe Temperaturen

TT 12: Quantum Dynamics, Decoherence and Quantum Information (organized by DY)

TT 12.3: Vortrag

Montag, 31. März 2014, 10:15–10:30, HÜL 186

A generalized quantum regression theorem for non-Markovian two-time correlation functions of system operators — •Jinshuang Jin^1,2,3, Michael Marthaler^3,4, and Gerd Schön^3,4 — ¹Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology, Karlsruhe, Germany — ²Department of Physics, Hangzhou Normal University, Hangzhou, China — ³Institut für Theoretische Festkörperphysik, Karlsruhe Institute of Technology(KIT), Karlsruhe, Germany — ⁴DFG-Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology, Karlsruhe, Germany

We present an efficient scheme for the calculation of two-time correlation functions for open quantum systems with memory effect. This scheme is the generalization of the quantum regression theorem with the consideration of non-Markovian effects. We further apply the present method to both Ferminonic and Bosonic systems. The former is to study the charge fluctuation spectrum of the interacting quantum dots in the sequential tunneling regime. The latter is to investigate the non-Markovian effect of the phonon bath on the emission spectrum of a cavity. The characteristic non-Markovian features in the spectra are explored.