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QI: Fachverband Quanteninformation
QI 24: Open Quantum Systems I (joint session Q/QI)
QI 24.6: Vortrag
Mittwoch, 12. März 2025, 16:00–16:15, HS I
Heat transport between small spherical objects — •Nico Strauß and Stefan Yoshi Buhmann — Institute of Physics, University of Kassel, 34132 Kassel, Germany
The second law of thermodynamics dictates that heat naturally flows from warm to cold objects, thereby providing a direction of time [1]. In the context of quantum optics within nonreciprocal media [2], an arrow of time is alternatively provided by the observation that optical paths cannot be reversed. How are these two notions compatible at the level of quantum electrodynamics?
To address this question, we investigate nanoscale heat transfer between three small spherical media that display a temperature gradient of T3 > T2 > T1 [3]. We express the result in terms of the spheres’ polarizabilities and analyze the impact of various material properties and external fields on the heat transfer occurring between the spheres, as well as their interplay with the second law of thermodynamics in the near-field regime.
[1] Volokitin, A. I., Persson, B. N. J. Rev. Mod. Phys. 4, 79 (2007).
[2] S. Y. Buhmann, et al, New J. Phys. 14, 083034 (2012).
[3] K. Joulain, et al, Surface Science Reports 57, 59*112 (2005).
Keywords: heat transport; small spheres