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

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Abstract

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.

Detaljer

Författare
  • A. M. Savin
  • J. P. Pekola
  • T. Holmqvist
  • Jessica C. Hassel
  • L. Grönberg
  • P. Helistö
  • A. Kidiyarova-Shevchenko
Externa organisationer
  • Helsinki University of Technology
  • Aalto University
  • Chalmers Tekniska Högskola
  • VTT Technical Research Centre of Finland, Helsinki
Originalspråkengelska
Artikelnummer133505
TidskriftApplied Physics Letters
Volym89
Utgåva nummer13
StatusPublished - 2006
PublikationskategoriForskning
Peer review utfördJa
Externt publiceradJa