Regensburg 2019 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 64: Poster Session: Transport

TT 64.2: Poster

Donnerstag, 4. April 2019, 15:00–18:30, Poster D

Synchronization of coherent charge oscillations of two coupled double quantum dots — •Eric Kleinherbers, Philipp Stegmann, and Jürgen König — Theoretische Physik, Universität Duisburg-Essen and CENIDE, Lotharstr. 1, 47048 Duisburg

In a double-dot system, charge oscillates coherently between two tunnel-coupled quantum dots. These oscillations have a distinct impact on the electron transport through the system and can be detected by means of the finite-frequency noise or the waiting-time distribution [1].

Here, we discuss how the oscillations of two distinct double-dot systems influence each other by means of electrostatic coupling. The electron transport is modeled by a generalized master equation obtained from a real-time diagrammatic approach [2]. By calculating the waiting-time distribution and performing a spectral analysis, synchronization effects are revealed.
T. Brandes, Ann. Phys. 17, 477 (2008)
B. Wunsch, M. Braun, J. König, and D. Pfannkuche, Phys. Rev. B 72, 205319 (2005)