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

Juha Hassel, Leif Grönberg, Panu Helistö, A. M. Savin, J.P. Pekola, A. Kidiyarova-Shevchenko, T. Holmqvist

Research output: Contribution to journalArticleScientificpeer-review

17 Citations (Scopus)

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 40nA at 2GHz sampling rate. Due to improved cooling the electron temperature in shunt resistors of a SFQ comparator is below 50mK when the bath temperature is about 30mK.
Original languageEnglish
Pages (from-to)133505
JournalApplied Physics Letters
Volume89
Issue number13
DOIs
Publication statusPublished - 2006
MoE publication typeA1 Journal article-refereed

Fingerprint

shunts
resistors
high resolution
cooling
temperature
baths
dissipation
sampling
electron energy

Keywords

  • superconducting junction devices
  • Josephson junction
  • Josephson junction arrays
  • current comparators
  • resistors
  • cooling
  • electrical conductivity

Cite this

Hassel, Juha ; Grönberg, Leif ; Helistö, Panu ; Savin, A. M. ; Pekola, J.P. ; Kidiyarova-Shevchenko, A. ; Holmqvist, T. / High-resolution superconducting single-flux quantum comparator for sub-Kelvin temperatures. In: Applied Physics Letters. 2006 ; Vol. 89, No. 13. pp. 133505.
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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 40nA at 2GHz sampling rate. Due to improved cooling the electron temperature in shunt resistors of a SFQ comparator is below 50mK when the bath temperature is about 30mK.",
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High-resolution superconducting single-flux quantum comparator for sub-Kelvin temperatures. / Hassel, Juha; Grönberg, Leif; Helistö, Panu; Savin, A. M.; Pekola, J.P.; Kidiyarova-Shevchenko, A.; Holmqvist, T.

In: Applied Physics Letters, Vol. 89, No. 13, 2006, p. 133505.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - High-resolution superconducting single-flux quantum comparator for sub-Kelvin temperatures

AU - Hassel, Juha

AU - Grönberg, Leif

AU - Helistö, Panu

AU - Savin, A. M.

AU - Pekola, J.P.

AU - Kidiyarova-Shevchenko, A.

AU - Holmqvist, T.

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KW - Josephson junction

KW - Josephson junction arrays

KW - current comparators

KW - resistors

KW - cooling

KW - electrical conductivity

U2 - 10.1063/1.2357858

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