Effects of photon field on heat transport through a quantum wire attached to leads |
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Authors: | Nzar Rauf Abdullah Chi-Shung Tang Andrei Manolescu Vidar Gudmundsson |
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Institution: | 1. Physics Department, College of Science, University of Sulaimani, Kurdistan Region, Iraq;2. Komar Research Center, Komar University of Science and Technology, Sulaimani City, Iraq;3. Science Institute, University of Iceland, Dunhaga 3, IS-107 Reykjavik, Iceland;4. Department of Mechanical Engineering, National United University, 1, Lienda, Miaoli 36003, Taiwan;5. School of Science and Engineering, Reykjavik University, Menntavegur 1, IS-101 Reykjavik, Iceland |
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Abstract: | We theoretically investigate photo-thermoelectric transport through a quantum wire in a photon cavity coupled to electron reservoirs with different temperatures. Our approach, based on a quantum master equation, allows us to investigate the influence of a quantized photon field on the heat current and thermoelectric transport in the system. We find that the heat current through the quantum wire is influenced by the photon field resulting in a negative heat current in certain cases. The characteristics of the transport are studied by tuning the ratio, , between the photon energy, , and the thermal energy, . The thermoelectric transport is enhanced by the cavity photons when . By contrast, if , the photon field is dominant and a suppression in the thermoelectric transport can be found in the case when the cavity-photon field is close to a resonance with the two lowest one-electron states in the system. Our approach points to a new technique to amplify thermoelectric current in nano-devices. |
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Keywords: | Thermo-optic effects Electronic transport in mesoscopic systems Cavity quantum electrodynamics Electro-optical effects |
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