Realization of a square-wave voltage with externally-shunted SIS Josephson junction arrays for a quantum AC voltage standard

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Abstract

A quantum-based ac voltage standard operating from about 1 Hz up to 10 kHz at 1 V is being developed. The standard is based on relating the output of a stable sine generator to a square wave obtained by biasing a nonhysteretic Josephson junction array alternately at steps n = -2 and n = +2. We have constructed a bias current source and a buffer amplifier connected to the array which enable fast switching between steps. In this paper, we describe the system used for generation of the square wave and present experimental results which show that the accuracy of the fundamental frequency component amplitude of the square wave is sufficient for realization of a standard with accuracy better than 1 * 10-6.
Original languageEnglish
Pages (from-to)636 - 640
Number of pages5
JournalIEEE Transactions on Instrumentation and Measurement
Volume54
Issue number2
DOIs
Publication statusPublished - 2005
MoE publication typeA1 Journal article-refereed

Fingerprint

square waves
Josephson junctions
alternating current
Electric potential
electric potential
Buffer amplifiers
Bias currents
generators
buffers
amplifiers
output

Keywords

  • AC
  • Josephson voltage array (JVA)
  • Josephson junction arrays
  • square voltage
  • voltage standard
  • Josephson junction

Cite this

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title = "Realization of a square-wave voltage with externally-shunted SIS Josephson junction arrays for a quantum AC voltage standard",
abstract = "A quantum-based ac voltage standard operating from about 1 Hz up to 10 kHz at 1 V is being developed. The standard is based on relating the output of a stable sine generator to a square wave obtained by biasing a nonhysteretic Josephson junction array alternately at steps n = -2 and n = +2. We have constructed a bias current source and a buffer amplifier connected to the array which enable fast switching between steps. In this paper, we describe the system used for generation of the square wave and present experimental results which show that the accuracy of the fundamental frequency component amplitude of the square wave is sufficient for realization of a standard with accuracy better than 1 * 10-6.",
keywords = "AC, Josephson voltage array (JVA), Josephson junction arrays, square voltage, voltage standard, Josephson junction",
author = "Jaani Nissil{\"a} and Antti Kemppinen and Kari Ojasalo and Juha Hassel and Antti Manninen and Panu Helist{\"o} and Heikki Sepp{\"a}",
note = "Project code: T2SU00067",
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language = "English",
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pages = "636 -- 640",
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T1 - Realization of a square-wave voltage with externally-shunted SIS Josephson junction arrays for a quantum AC voltage standard

AU - Nissilä, Jaani

AU - Kemppinen, Antti

AU - Ojasalo, Kari

AU - Hassel, Juha

AU - Manninen, Antti

AU - Helistö, Panu

AU - Seppä, Heikki

N1 - Project code: T2SU00067

PY - 2005

Y1 - 2005

N2 - A quantum-based ac voltage standard operating from about 1 Hz up to 10 kHz at 1 V is being developed. The standard is based on relating the output of a stable sine generator to a square wave obtained by biasing a nonhysteretic Josephson junction array alternately at steps n = -2 and n = +2. We have constructed a bias current source and a buffer amplifier connected to the array which enable fast switching between steps. In this paper, we describe the system used for generation of the square wave and present experimental results which show that the accuracy of the fundamental frequency component amplitude of the square wave is sufficient for realization of a standard with accuracy better than 1 * 10-6.

AB - A quantum-based ac voltage standard operating from about 1 Hz up to 10 kHz at 1 V is being developed. The standard is based on relating the output of a stable sine generator to a square wave obtained by biasing a nonhysteretic Josephson junction array alternately at steps n = -2 and n = +2. We have constructed a bias current source and a buffer amplifier connected to the array which enable fast switching between steps. In this paper, we describe the system used for generation of the square wave and present experimental results which show that the accuracy of the fundamental frequency component amplitude of the square wave is sufficient for realization of a standard with accuracy better than 1 * 10-6.

KW - AC

KW - Josephson voltage array (JVA)

KW - Josephson junction arrays

KW - square voltage

KW - voltage standard

KW - Josephson junction

U2 - 10.1109/TIM.2004.843117

DO - 10.1109/TIM.2004.843117

M3 - Article

VL - 54

SP - 636

EP - 640

JO - IEEE Transactions on Instrumentation and Measurement

JF - IEEE Transactions on Instrumentation and Measurement

SN - 0018-9456

IS - 2

ER -