Journal
PHYSICAL REVIEW B
Volume 99, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.99.035129
Keywords
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Funding
- National Natural Science Foundation of China (NSFC) [11675116]
- Jiangsu Distinguished Professor funding
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Science and Engineering Research Board (SERB), Department of Science and Technology, Government of India [SB/S2/RJN-114/2016]
- NNSFC [11775159]
- Natural Science Foundation of Shanghai [18ZR1442800]
- National Youth 1000 Talents Program in China
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research [ICTS/Prog -oqs2017/2017/07]
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Recent breakthroughs in quantum-dot circuit-quantum-electrodynamics systems are promising both from fundamental perspectives and from the point of view of quantum photonic devices. However, understanding such setups as potential thermoelectric devices has been missing. In this paper, via the Keldysh nonequilibrium Green's function approach, we show that cavity-coupled double quantum-dots can serve as excellent quantum thermoelectric diodes and transistors. Using an enhanced perturbation approach based on the exact polaron transformation, we find dependencies of thermoelectric transport properties on the electron-photon interaction beyond the predictions from the conventional second-order perturbation theory. In particular, strong light-matter interaction leads to pronounced rectification effects for both charge and heat, as well as thermal transistor effects in the linear transport regime, which opens up a cutting-edge frontier for quantum thermoelectric devices.
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