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

doi:10.1063/1.2357858

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 journal › Article › Scientific › peer-review

19 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 language	English
Pages (from-to)	133505
Journal	Applied Physics Letters
Volume	89
Issue number	13
DOIs	https://doi.org/10.1063/1.2357858
Publication status	Published - 2006
MoE publication type	A1 Journal article-refereed

Keywords

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

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10.1063/1.2357858

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title = "High-resolution superconducting single-flux quantum comparator for sub-Kelvin temperatures",

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.",

keywords = "superconducting junction devices, Josephson junction, Josephson junction arrays, current comparators, resistors, cooling, electrical conductivity",

author = "Juha Hassel and Leif Gr{\"o}nberg and Panu Helist{\"o} and Savin, {A. M.} and J.P. Pekola and A. Kidiyarova-Shevchenko and T. Holmqvist",

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journal = "Applied Physics Letters",

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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.

N1 - Project code: 1267 T4SU00344

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

KW - superconducting junction devices

KW - Josephson junction

KW - Josephson junction arrays

KW - current comparators

KW - resistors

KW - cooling

KW - electrical conductivity

U2 - 10.1063/1.2357858

DO - 10.1063/1.2357858

M3 - Article

SN - 0003-6951

VL - 89

SP - 133505

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 13

ER -

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

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Keywords

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