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Quantum-circuit refrigerator

Author

Listed:
  • Kuan Yen Tan

    (QCD Labs, COMP Centre of Excellence, Aalto University)

  • Matti Partanen

    (QCD Labs, COMP Centre of Excellence, Aalto University)

  • Russell E. Lake

    (QCD Labs, COMP Centre of Excellence, Aalto University
    Present address: National Institute of Standards and Technology, Boulder, Colorado 80305, USA)

  • Joonas Govenius

    (QCD Labs, COMP Centre of Excellence, Aalto University
    Present address: Department of Physics, Stockholm University, AlbaNova University Center, SE-10691 Stockholm, Sweden)

  • Shumpei Masuda

    (QCD Labs, COMP Centre of Excellence, Aalto University)

  • Mikko Möttönen

    (QCD Labs, COMP Centre of Excellence, Aalto University)

Abstract

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.

Suggested Citation

  • Kuan Yen Tan & Matti Partanen & Russell E. Lake & Joonas Govenius & Shumpei Masuda & Mikko Möttönen, 2017. "Quantum-circuit refrigerator," Nature Communications, Nature, vol. 8(1), pages 1-8, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15189
    DOI: 10.1038/ncomms15189
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    Cited by:

    1. Zahra Ebrahim Nataj & Youming Xu & Dylan Wright & Jonas O. Brown & Jivtesh Garg & Xi Chen & Fariborz Kargar & Alexander A. Balandin, 2023. "Cryogenic characteristics of graphene composites—evolution from thermal conductors to thermal insulators," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Azat Gubaydullin & George Thomas & Dmitry S. Golubev & Dmitrii Lvov & Joonas T. Peltonen & Jukka P. Pekola, 2022. "Photonic heat transport in three terminal superconducting circuit," Nature Communications, Nature, vol. 13(1), pages 1-10, December.

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