Calorimetry of a phase slip in a Josephson junction

E. Gümüş; D. Majidi; D. Nikolić; P. Raif; B. Karimi; J. T. Peltonen; E. Scheer; J. P. Pekola; H. Courtois; W. Belzig; C. B. Winkelmann

doi:10.1038/s41567-022-01844-0

Calorimetry of a phase slip in a Josephson junction

E. Gümüş
, D. Majidi
, D. Nikolić
, P. Raif
, B. Karimi
, J. T. Peltonen
, E. Scheer
, J. P. Pekola
, H. Courtois
, W. Belzig
, C. B. Winkelmann^*

^*Corresponding author for this work

Institut national de physique nucléaire et de physique des particules
Universität Konstanz
Université Grenoble Alpes

Research output: Contribution to journal › Article › Scientific › peer-review

27 Citations (Scopus)

Abstract

Josephson junctions are a central element in superconducting quantum technology; in these devices, irreversibility arises from abrupt slips of the quantum phase difference across the junction. This phase slip is often visualized as the tunnelling of a flux quantum in the transverse direction to the superconducting weak link, which produces dissipation. Here we detect the instantaneous heat release caused by a phase slip in a Josephson junction, signalled by an abrupt increase in the local electronic temperature in the weak link and subsequent relaxation back to equilibrium. Beyond the advance in experimental quantum thermodynamics of observing heat in an elementary quantum process, our approach could allow experimentally investigating the ubiquity of dissipation in quantum devices, particularly in superconducting quantum sensors and qubits.

Original language	English
Pages (from-to)	196-200
Number of pages	5
Journal	Nature Physics
Volume	19
Issue number	2
Early online date	2023
DOIs	https://doi.org/10.1038/s41567-022-01844-0
Publication status	Published - Feb 2023
MoE publication type	A1 Journal article-refereed

Funding

We acknowledge help from A. Théry and T. Crozes. The samples were fabricated at the Nanofab platform at Institut Néel. This work received support from the European Union under the Marie Skłodowska-Curie grant agreement no. 766025 (QuESTech), from the Agence Nationale de la Recherche under the program ‘Investissements d’avenir’ (ANR-15-IDEX-02) and the Laboratoire d’excellence LANEF (ANR-10-LABX-51-01), and from Deutsche Forschungsgemeinschaft (DFG; German Research Foundation) via SFB 1432 (project no. 425217212).

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10.1038/s41567-022-01844-0

https://arxiv.org/abs/2202.08726

Cite this

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title = "Calorimetry of a phase slip in a Josephson junction",

abstract = "Josephson junctions are a central element in superconducting quantum technology; in these devices, irreversibility arises from abrupt slips of the quantum phase difference across the junction. This phase slip is often visualized as the tunnelling of a flux quantum in the transverse direction to the superconducting weak link, which produces dissipation. Here we detect the instantaneous heat release caused by a phase slip in a Josephson junction, signalled by an abrupt increase in the local electronic temperature in the weak link and subsequent relaxation back to equilibrium. Beyond the advance in experimental quantum thermodynamics of observing heat in an elementary quantum process, our approach could allow experimentally investigating the ubiquity of dissipation in quantum devices, particularly in superconducting quantum sensors and qubits.",

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AU - Majidi, D.

AU - Nikolić, D.

AU - Raif, P.

AU - Karimi, B.

AU - Peltonen, J. T.

AU - Scheer, E.

AU - Pekola, J. P.

AU - Courtois, H.

AU - Belzig, W.

AU - Winkelmann, C. B.

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N2 - Josephson junctions are a central element in superconducting quantum technology; in these devices, irreversibility arises from abrupt slips of the quantum phase difference across the junction. This phase slip is often visualized as the tunnelling of a flux quantum in the transverse direction to the superconducting weak link, which produces dissipation. Here we detect the instantaneous heat release caused by a phase slip in a Josephson junction, signalled by an abrupt increase in the local electronic temperature in the weak link and subsequent relaxation back to equilibrium. Beyond the advance in experimental quantum thermodynamics of observing heat in an elementary quantum process, our approach could allow experimentally investigating the ubiquity of dissipation in quantum devices, particularly in superconducting quantum sensors and qubits.

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Calorimetry of a phase slip in a Josephson junction

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Calorimetry of a Quantum Phase Slip

QuESTech: QUantum Electronics Science and TECHnology training

SQH: Superconducting quantum heat engines and refrigerators

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Calorimetry of a phase slip in a Josephson junction

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QuESTech: QUantum Electronics Science and TECHnology training

SQH: Superconducting quantum heat engines and refrigerators

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