Flux-tunable heat sink for quantum electric circuits

M. Partanen; K.Y. Tan; S. Masuda; J. Govenius; R.E. Lake; M. Jenei; Leif Grönberg; Juha Hassel; Slawomir Simbierowicz; Visa Vesterinen; J. Tuorila; T. Ala-Nissilä; M. Möttönen

doi:10.1038/s41598-018-24449-1

Flux-tunable heat sink for quantum electric circuits

M. Partanen (Corresponding Author), K.Y. Tan, S. Masuda, J. Govenius, R.E. Lake, M. Jenei, Leif Grönberg, Juha Hassel, Slawomir Simbierowicz, Visa Vesterinen, J. Tuorila, T. Ala-Nissilä, M. Möttönen (Corresponding Author)

QTF - Quantum Technology Finland - The National Centre of Excellence

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

12 Citations (Scopus)

Abstract

Superconducting microwave circuits show great potential for practical quantum technological applications such as quantum information processing. However, fast and on-demand initialization of the quantum degrees of freedom in these devices remains a challenge. Here, we experimentally implement a tunable heat sink that is potentially suitable for the initialization of superconducting qubits. Our device consists of two coupled resonators. The first resonator has a high quality factor and a fixed frequency whereas the second resonator is designed to have a low quality factor and a tunable resonance frequency. We engineer the low quality factor using an on-chip resistor and the frequency tunability using a superconducting quantum interference device. When the two resonators are in resonance, the photons in the high-quality resonator can be efficiently dissipated. We show that the corresponding loaded quality factor can be tuned from above 105 down to a few thousand at 10 GHz in good quantitative agreement with our theoretical model.

Original language	English
Article number	6325
Number of pages	9
Journal	Scientific Reports
Volume	8
DOIs	https://doi.org/10.1038/s41598-018-24449-1
Publication status	Published - 20 Apr 2018
MoE publication type	A1 Journal article-refereed

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10.1038/s41598-018-24449-1

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Partanen, M., Tan, K. Y., Masuda, S., Govenius, J., Lake, R. E., Jenei, M., Grönberg, L., Hassel, J., Simbierowicz, S., Vesterinen, V., Tuorila, J., Ala-Nissilä, T., & Möttönen, M. (2018). Flux-tunable heat sink for quantum electric circuits. Scientific Reports, 8, [ 6325]. https://doi.org/10.1038/s41598-018-24449-1

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Flux-tunable heat sink for quantum electric circuits. / Partanen, M. (Corresponding Author); Tan, K.Y.; Masuda, S.; Govenius, J.; Lake, R.E.; Jenei, M.; Grönberg, Leif; Hassel, Juha; Simbierowicz, Slawomir; Vesterinen, Visa; Tuorila, J.; Ala-Nissilä, T.; Möttönen, M. (Corresponding Author).

In: Scientific Reports, Vol. 8, 6325, 20.04.2018.

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

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AU - Jenei, M.

AU - Grönberg, Leif

AU - Hassel, Juha

AU - Simbierowicz, Slawomir

AU - Vesterinen, Visa

AU - Tuorila, J.

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