Unconditional reset of superconducting qubits and readout resonators using a quantum-circuit refrigerator

ORAL

Abstract

In quantum information processing with logical qubits, increasing the clock rate of the error correction cycles improves the qubit fidelity. The clock rate is limited by the duration of logical gates, qubit state readout, and initialization of qubits and readout circuits. Linear and non-linear superconducting resonators can be quickly initialized using a quantum-circuit refrigerator based on fast voltage pulsing of an SINIS junction [1,2]. We discuss our latest results to this end.

[1] V. Sevriuk et al., Appl. Phys. Lett. 115, 082601 (2019)
[2] D. Basilewitsch et al., New J. Phys. 21, 093054 (2019)

*IQM Finland OY, European Union’s Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie Grant No. 795159 and under the European Research Council Consolidator Grant No.681311 (QUESS), from the Academy of Finland Centre of Excellence in Quantum Technology Grant No. 312300, No.316619. and No. 305237, from JST ERATO Grant No. JP-MJER1601, from JSPS KAKENHI Grant No. 18K03486, from the EU Flagship project QMiCS, from the Emil Aaltonen Foundation, from the Alfred Kordelin Foundation, and from the Vilho, Yrjö and Kalle Väisälä Foundation. We acknowledge the provision of facilities and technical support by Aalto University at OtaNano - Micronova Nanofabrication Centre.

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Presenters

  • Johannes Heinsoo

    • IQM Finland Oy

Authors

  • Vasilii Sevriuk

    • IQM Finland Oy
    • QCD Labs, QTF Center of Excellence, Department of Applied Physics, Aalto University
    • QCD Labs, Aalto University

  • Jani Tuorila

    • IQM Finland Oy

  • Johannes Heinsoo

    • IQM Finland Oy

  • Caspar Ockeloen-Korppi

    • IQM Finland Oy

  • Joni Ikonen

    • Department of Applied Physics, Aalto University

  • Kuan Yen Tan

    • IQM Finland Oy
    • Aalto University

  • Eric Hyyppä

    • QCD Labs, QTF Center of Excellence, Department of Applied Physics, Aalto University
    • Department of Applied Physics, Aalto University

  • Matti Silveri

    • Research Unit of Nano and Molecular Systems, University of Oulu
    • QCD Labs, Aalto University
    • Department of Applied Physics, Aalto University

  • Matti Partanen

    • QCD Labs, QTF Center of Excellence, Department of Applied Physics, Aalto University
    • Walther-Meissner-Institut, Munich, Germany
    • Walther-Meißner-Institut & Technische Universtät München, Germany
    • Department of Applied Physics, Aalto University

  • Máté Jenei

    • QCD Labs, QTF Center of Excellence, Department of Applied Physics, Aalto University
    • Department of Applied Physics, Aalto University

  • Giacomo Catto

    • Department of Applied Physics, Aalto University

  • Timm Mörstedt

    • Department of Applied Physics, Aalto University

  • Leif Grönberg

    • VTT Micro & Nanoelectronics
    • VTT Technical Research Centre of Finland Ltd
    • QTF Center of Excellence, VTT Technical Research Centre of Finland
    • VTT Techical Research Center of Finland Ltd.

  • Jan Goetz

    • IQM Finland Oy
    • QCD Labs, QTF Center of Excellence, Department of Applied Physics, Aalto University

  • Mikko Mottonen

    • Department of Applied Physics, Aalto University