SKM 2021 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 3: Poster Sesssion I: Quantum Chaos and Many-Body Quantum Dynamics

DY 3.9: Poster

Dienstag, 28. September 2021, 17:30–19:30, P

Heat transport through a superconducting artificial atom — •Meng Xu, Juergen Stockburge, and Joachim Ankerhold — ICQ and IQST, Ulm University, Germany

Theoretical studies of photonic heat transport and rectification in superconducting platforms play an important role not only in understanding current experimental findings but also in designing and potentially improving future architectures to control heat, for example in circuit Quantum Electrodynamics (cQED). Moreover, fundamental questions regarding signatures of quantum mechanics in thermodynamic properties of devices at nanoscales have not been answered yet and require advanced simulation techniques beyond conventional perturbative treatments

Quantum heat transfer through a generic superconducting set-up consisting of a tunable transmon qubit placed between resonators that are terminated by thermal reservoirs is explored. Applying the numerical exact hierarchical equation of motion (HEOM) approach, steady-state properties are revealed, and experimentally relevant parameter sets are identified. Benchmark results are compared with predictions based on approximate treatments to demonstrate their failure in broad ranges of parameter space. These findings may allow improving future designs for heat control in superconducting devices.