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TT: Fachverband Tiefe Temperaturen

TT 73: Quantum Dynamics, Decoherence and Quantum Information (joint session DY/TT)

TT 73.3: Vortrag

Mittwoch, 14. März 2018, 16:00–16:15, EB 107

Quantum heat transport and rectification through anharmonic chains between reservoirs — •Thomas Motz, Joachim Ankerhold, and Jürgen Stockburger — Ulm University, Institute for Complex Quantum Systems

We present a novel dynamical description of quantum heat transfer through anharmonic chains between thermal reservoirs [1,2]. The approach is non-perturbative in the system-bath coupling and also allows to include disorder and the presence of external driving. Technically, we start from the formally exact stochastic Liouville-von Neumann (SLN) treatment of open quantum dynamics [3] and consider the situation of ohmic dissipation. For purely harmonic chains this leads to a very efficient scheme to study also very long chains and flux-flux correlations. In the anharmonic situation, we particularly study thermal rectification, the impact of disorder, and strong coupling to the heat baths.
[1] J. T. Stockburger and T. Motz, Fortschr. Phys. 65, 1600067 (2017)
[2] T. Motz et al., New J. Phys. 19 053013 (2017)
[3] J. T. Stockburger and H. Grabert, PRL 88 170407 (2002)