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Tommy Holmqvist

Research engineer

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High-resolution superconducting single-flux quantum comparator for sub-Kelvin temperatures

Author

  • A. M. Savin
  • J. P. Pekola
  • T. Holmqvist
  • Jessica C. Hassel
  • L. Grönberg
  • P. Helistö
  • A. Kidiyarova-Shevchenko

Summary, in English

A design of sub-Kelvin single-flux quantum (SFQ) circuits with reduced power dissipation and additional cooling of shunt resistors has been developed and characterized. The authors demonstrate operation of SFQ comparators with current resolution of 40 nA at 2 GHz sampling rate. Due to improved cooling the electron temperature in shunt resistors of a SFQ comparator is below 50 mK when the bath temperature is about 30 mK.

Publishing year

2006

Language

English

Publication/Series

Applied Physics Letters

Volume

89

Issue

13

Document type

Journal article

Publisher

American Institute of Physics (AIP)

Status

Published

ISBN/ISSN/Other

  • ISSN: 0003-6951