Projects per year
Abstract
Heat is detrimental for the operation of quantum systems, yet it fundamentally behaves according to quantum mechanics, being phase coherent and universally quantum-limited regardless of its carriers. Due to their robustness, superconducting circuits integrating dissipative elements are ideal candidates to emulate many-body phenomena in quantum heat transport, hitherto scarcely explored experimentally. However, their ability to tackle the underlying full physical richness is severely hindered by the exclusive use of a magnetic flux as a control parameter and requires complementary approaches. Here, we introduce a dual, magnetic field-free circuit where charge quantization in a superconducting island enables thorough electric field control. We thus tune the thermal conductance, close to its quantum limit, of a single photonic channel between two mesoscopic reservoirs. We observe heat flow oscillations originating from the competition between Cooper-pair tunnelling and Coulomb repulsion in the island, well captured by a simple model. Our results highlight the consequences of charge-phase conjugation on heat transport, with promising applications in thermal management of quantum devices and design of microbolometers.
Original language | English |
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Article number | 4326 |
Pages (from-to) | 1-6 |
Number of pages | 6 |
Journal | Nature Communications |
Volume | 11 |
Issue number | 1 |
DOIs | |
Publication status | Published - 28 Aug 2020 |
MoE publication type | A1 Journal article-refereed |
Fingerprint
Dive into the research topics of 'Electric field control of radiative heat transfer in a superconducting circuit'. Together they form a unique fingerprint.Projects
- 3 Finished
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-: European Microkelvin Platform
Hakonen, P. (Principal investigator)
01/01/2019 → 31/12/2023
Project: EU: Framework programmes funding
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QTF: Finnish Centre of Excellence in Quantum Technology
Pekola, J. (Principal investigator), Blanchet, F. (Project Member), Golubev, D. (Project Member), Maillet, O. (Project Member), Mannila, E. (Project Member), Senior, J. (Project Member) & Marín Suárez, M. (Project Member)
01/01/2018 → 31/12/2020
Project: Academy of Finland: Other research funding
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SQH: Superconducting quantum heat engines and refrigerators
Pekola, J. (Principal investigator), Karimi, B. (Project Member), Singh, S. (Project Member), Blanchet, F. (Project Member), Peltonen, J. (Project Member), Subero Rengel, D. (Project Member), Upadhyay, R. (Project Member), Gubaydullin, A. (Project Member), Wang, L. (Project Member), Chang, Y.-C. (Project Member), Mäkinen, I. (Project Member), Thomas, G. (Project Member), Lvov, D. (Project Member), Mannila, E. (Project Member), Senior, J. (Project Member), Strelnikov, A. (Project Member), Chiang, K.-H. (Project Member), Lemziakov, S. (Project Member), Satrya, C. (Project Member), Chen, Z.-Y. (Project Member), Praks, E. (Project Member) & Marín Suárez, M. (Project Member)
27/09/2017 → 30/09/2023
Project: EU: ERC grants
Equipment
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OtaNano – Low Temperature Laboratory
Savin, A. (Manager) & Rissanen, A. (Other)
OtaNanoFacility/equipment: Facility
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