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Quantum-circuit refrigerator
Quantum technology promises revolutionizing applications in information processing, communications, sensing and modelling. However, efficient on-demand cooling of the functional quantum degrees of freedom remains challenging in many solid-state implementations, such as superconducting circuits. Here...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5424155/ https://www.ncbi.nlm.nih.gov/pubmed/28480900 http://dx.doi.org/10.1038/ncomms15189 |
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author | Tan, Kuan Yen Partanen, Matti Lake, Russell E. Govenius, Joonas Masuda, Shumpei Möttönen, Mikko |
author_facet | Tan, Kuan Yen Partanen, Matti Lake, Russell E. Govenius, Joonas Masuda, Shumpei Möttönen, Mikko |
author_sort | Tan, Kuan Yen |
collection | PubMed |
description | Quantum technology promises revolutionizing applications in information processing, communications, sensing and modelling. However, efficient on-demand cooling of the functional quantum degrees of freedom remains challenging in many solid-state implementations, such as superconducting circuits. Here we demonstrate direct cooling of a superconducting resonator mode using voltage-controllable electron tunnelling in a nanoscale refrigerator. This result is revealed by a decreased electron temperature at a resonator-coupled probe resistor, even for an elevated electron temperature at the refrigerator. Our conclusions are verified by control experiments and by a good quantitative agreement between theory and experimental observations at various operation voltages and bath temperatures. In the future, we aim to remove spurious dissipation introduced by our refrigerator and to decrease the operational temperature. Such an ideal quantum-circuit refrigerator has potential applications in the initialization of quantum electric devices. In the superconducting quantum computer, for example, fast and accurate reset of the quantum memory is needed. |
format | Online Article Text |
id | pubmed-5424155 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-54241552017-05-23 Quantum-circuit refrigerator Tan, Kuan Yen Partanen, Matti Lake, Russell E. Govenius, Joonas Masuda, Shumpei Möttönen, Mikko Nat Commun Article Quantum technology promises revolutionizing applications in information processing, communications, sensing and modelling. However, efficient on-demand cooling of the functional quantum degrees of freedom remains challenging in many solid-state implementations, such as superconducting circuits. Here we demonstrate direct cooling of a superconducting resonator mode using voltage-controllable electron tunnelling in a nanoscale refrigerator. This result is revealed by a decreased electron temperature at a resonator-coupled probe resistor, even for an elevated electron temperature at the refrigerator. Our conclusions are verified by control experiments and by a good quantitative agreement between theory and experimental observations at various operation voltages and bath temperatures. In the future, we aim to remove spurious dissipation introduced by our refrigerator and to decrease the operational temperature. Such an ideal quantum-circuit refrigerator has potential applications in the initialization of quantum electric devices. In the superconducting quantum computer, for example, fast and accurate reset of the quantum memory is needed. Nature Publishing Group 2017-05-08 /pmc/articles/PMC5424155/ /pubmed/28480900 http://dx.doi.org/10.1038/ncomms15189 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Tan, Kuan Yen Partanen, Matti Lake, Russell E. Govenius, Joonas Masuda, Shumpei Möttönen, Mikko Quantum-circuit refrigerator |
title | Quantum-circuit refrigerator |
title_full | Quantum-circuit refrigerator |
title_fullStr | Quantum-circuit refrigerator |
title_full_unstemmed | Quantum-circuit refrigerator |
title_short | Quantum-circuit refrigerator |
title_sort | quantum-circuit refrigerator |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5424155/ https://www.ncbi.nlm.nih.gov/pubmed/28480900 http://dx.doi.org/10.1038/ncomms15189 |
work_keys_str_mv | AT tankuanyen quantumcircuitrefrigerator AT partanenmatti quantumcircuitrefrigerator AT lakerusselle quantumcircuitrefrigerator AT goveniusjoonas quantumcircuitrefrigerator AT masudashumpei quantumcircuitrefrigerator AT mottonenmikko quantumcircuitrefrigerator |