Berlin 2018 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 29: Poster Session: Cryogenic Particle Detectors and Cyotechnique
TT 29.11: Poster
Monday, March 12, 2018, 15:00–19:00, Poster B
Quickly Tunable Rerigerator for Superconducting Quantum Circuits — •Vasilii Sevriuk1, Kuan Tan1, Shumpei Masuda1, Jan Goetz1, Matti Partanen1, Dibyendu Hazra1, Eric Hyyppä1, Joonas Govenius1, Russell Lake2, Visa Vesterinen3, Leif Grönberg3, Juha Hassel3, Slavomir Simbierowicz3, Marton Gunyho1, Aarne Keränen1, Jani Tuorila1, Tapio Ala-Nissila4, Matti Silveri1, Hermann Grabert5, and Mikko Möttönen1 — 1QCD Labs, COMP Centre of Excellence, Department of Applied Physics, Aalto University, PO Box 13500, FI-00076 Aalto, Finland — 2National Institute of Standards and Technology, Boulder, CO, United States. — 3VTT Technical Research Centre of Finland Ltd, VTT, Finland. — 4Departments of Mathematical Sciences and Physics, Loughborough University, Loughborough, United Kingdom. — 5Department of Physics, University of Freiburg, Freiburg, Germany.
In the past decade, the research on superconducting quantum circuits has provided a great number of superior microwave components such as superconducting qubits, amplifiers, and sensors. Especially in the opertation of qubits, it is of utmost importance to be able to quickly remove any unwanted qubit excitations on demand for fast and accurate initialization. We recently introduced a device referred to as a quantum-circuit rerigerator [K. Y. Tan, et al., Nat. Commun. 8, 15189 (2017)]. In our experiments, we show how we can tune the dissipation of a superconducting resonator by orders of magnitude just by applying a bias voltage on the refrigerator. The time scale for switching the dissipation on and off is in the nanosecond range.