Fast control of dissipation in a superconducting resonator

Vasilii A. Sevriuk (Corresponding Author), K. Y. Tan, E. Hyyppä, M. Silveri, Meeri Partanen, M. Jenei, S. Masuda, J. Goetz, Visa Vesterinen, Leif Grönberg, M. Möttönen

Research output: Contribution to journalArticleScientificpeer-review

19 Citations (Scopus)


We report on fast tunability of an electromagnetic environment coupled to a superconducting coplanar waveguide resonator. Namely, we utilize a recently developed quantum-circuit refrigerator (QCR) to experimentally demonstrate a dynamic tunability in the total damping rate of the resonator up to almost two orders of magnitude. Based on the theory, it corresponds to a change in the internal damping rate by nearly four orders of magnitude. The control of the QCR is fully electrical, with the shortest implemented operation times in the range of 10 ns. This experiment constitutes a fast active reset of a superconducting quantum circuit. In the future, a similar scheme can potentially be used to initialize superconducting quantum bits.
Original languageEnglish
Article number082601
Number of pages5
JournalApplied Physics Letters
Issue number8
Publication statusPublished - 19 Aug 2019
MoE publication typeA1 Journal article-refereed


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