Traveling wave parametric amplifier with Josephson junctions using minimal resonator phase matching

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

120 Scopus Citations
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Author(s)

  • T. C. White
  • J. Y. Mutus
  • R. Barends
  • B. Campbell
  • Yu Chen
  • Z. Chen
  • B. Chiaro
  • A. Dunsworth
  • E. Jeffrey
  • J. Kelly
  • A. Megrant
  • C. Neill
  • P. J. J. O'Malley
  • P. Roushan
  • D. Sank
  • A. Vainsencher
  • J. Wenner
  • S. Chaudhuri
  • J. Gao
  • John M. Martinis

Detail(s)

Original languageEnglish
Article number242601
Journal / PublicationApplied Physics Letters
Volume106
Issue number24
Publication statusPublished - 15 Jun 2015
Externally publishedYes

Abstract

Josephson parametric amplifiers have become a critical tool in superconducting device physics due to their high gain and quantum-limited noise. Traveling wave parametric amplifiers (TWPAs) promise similar noise performance, while allowing for significant increases in both bandwidth and dynamic range. We present a TWPA device based on an LC-ladder transmission line of Josephson junctions and parallel plate capacitors using low-loss amorphous silicon dielectric. Crucially, we have inserted λ/4 resonators at regular intervals along the transmission line in order to maintain the phase matching condition between pump, signal, and idler and increase gain. We achieve an average gain of 12 dB across a 4 GHz span, along with an average saturation power of -92 dBm with noise approaching the quantum limit.

Bibliographic Note

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Citation Format(s)

Traveling wave parametric amplifier with Josephson junctions using minimal resonator phase matching. / White, T. C.; Mutus, J. Y.; Hoi, I.-C. et al.
In: Applied Physics Letters, Vol. 106, No. 24, 242601, 15.06.2015.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review