Article

 

Widely Tunable On-Chip Microwave Circulator for Superconducting Quantum Circuits Public Deposited

https://scholar.colorado.edu/concern/articles/df65v869h
Abstract
  • We report on the design and performance of an on-chip microwave circulator with a widely (GHz) tunable operation frequency. Nonreciprocity is created with a combination of frequency conversion and delay, and requires neither permanent magnets nor microwave bias tones, allowing on-chip integration with other superconducting circuits without the need for high-bandwidth control lines. Isolation in the device exceeds 20 dB over a bandwidth of tens of MHz, and its insertion loss is small, reaching as low as 0.9 dB at select operation frequencies. Furthermore, the device is linear with respect to input power for signal powers up to hundreds of fW (≈10^{3} circulating photons), and the direction of circulation can be dynamically reconfigured. We demonstrate its operation at a selection of frequencies between 4 and 6 GHz.
Creator
Date Issued
  • 2017-11-22
Academic Affiliation
Journal Title
Journal Issue/Number
  • 4.0
Journal Volume
  • 7.0
File Extent
  • 041043
Last Modified
  • 2019-12-06
Resource Type
Rights Statement
DOI
ISSN
  • 2160-3308
Language
License

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