Voltage linearity measurements using a binary Josephson system

Brom, Helko E. van den; Houtzager, E.; Rietveld, G.; Bemmelen, Roland van; Chevtchenko, O.A.

doi:10.1088/0957-0233/18/11/008

Cited by 18 publications

(14 citation statements)

References 18 publications

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“…These values seem to coincide with the previously reported accuracy levels in the DMV linearity measurements using liquid-helium-based JVS systems (typically 0.1 μV/V or better) [7]- [11]. We consider that this is reasonable since the estimated uncertainties are dominated by the uncertainties related to the DVMs themselves, as discussed above.…”

Section: Estimation Of Uncertaintysupporting

confidence: 89%

Evaluation of Linearity Characteristics in Digital Voltmeters Using a PJVS System With a 10-K Cooler

Maruyama

Takahashi

Katayama

et al. 2015

IEEE Trans. Instrum. Meas.

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We have evaluated the linearity of commercial digital voltmeters (DVMs) using a programmable Josephson voltage standard (PJVS) system. The PJVS system is composed of a 524 288-niobium nitride-based Josephson junction array that has the ability to generate arbitrary output voltages up to 17 V with a resolution of 12 bits. In our system, the junction array is operated in a 10-K compact cooler without a liquid-helium coolant. Up to now, we have succeeded in generating accurate dc voltage levels of up to approximately 13 V using this system. In this paper, we demonstrate our PJVS system as a tool for investigating the linearity characteristics of commercial DVMs, with an accuracy level of 0.1 µV/V or better, and discuss the uncertainty sources in these measurements. Index Terms-DC voltage, digital voltmeter (DVM), Josephson junction array, linearity, mechanical cooler, precision measurements, programmable Josephson voltage standard (PJVS). the development of the resistance calibration system based on the quantumHall effect. He has also been involved in programmable and pulse-driven ac Josephson voltage standards, including the Johnson noise thermometry project. He has served as the Chief of the Quantum Electrical Standards Section since 2010, and the Head of the Electricity and Magnetism Division with NMIJ, AIST, since 2013. He is involved in quantum current standards and metrology triangle experiments, which combine three quantum electrical effects. His current research interests include condensed matter and material physics, and their application to metrology. Dr. Kaneko was a recipient of the 2012 NCSLI Measure Editor's Choice Award.

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Section: Estimation Of Uncertaintysupporting

confidence: 89%

Evaluation of Linearity Characteristics in Digital Voltmeters Using a PJVS System With a 10-K Cooler

Maruyama

Takahashi

Katayama

et al. 2015

IEEE Trans. Instrum. Meas.

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“…The authors have measured the voltage difference at 10 V between the two systems with a relative combined uncertainty of 2.9 parts in 10 11 (k = 2). Today PJVS tend to replace CJVS not only for the calibration of Zener dc references but also for the calibration of the gain and linearity of high precision digital voltmeters through automated measurements [136,137].…”

Section: Conventional Devicesmentioning

confidence: 99%

The ampere and the electrical units in the quantum era

Poirier

Djordjevic

Schopfer

et al. 2019

Comptes Rendus. Physique

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By fixing two fundamental constants from quantum mechanics, the Planck constant h and the elementary charge e, the revised Système International (SI) of units endorses explicitly quantum mechanics. This evolution also highlights the importance of this theory which underpins the most accurate realization of the units. From 20 May 2019, the new definitions of the kilogram and of the ampere, based on fixed values of h and e respectively, will particularly impact the electrical metrology. The Josephson effect (JE) and the quantum Hall effect (QHE), used to maintain voltage and resistance standards with unprecedented reproducibility since 1990, will henceforth provide realizations of the volt and the ohm without the uncertainties inherited from the older electromechanical definitions. More broadly, the revised SI will sustain the exploitation of quantum effects to realize electrical units, to the benefit of end-users. Here, we review the state-of-the-art of these standards and discuss further applications and perspectives.

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“…des fils de mesures. Ces mesures permettent de déduire deux paramètres importants pour le voltmètre : le gain et la linéarité [27].…”

Section: Procédure D'étalonnage De Voltmètres Et Nanovoltmètresunclassified

“…Enfin, la mesure des diverses résistances de fuite du circuit de mesure (résis-tances d'isolement du scanner et des câbles de mesure) associée à la mesure des résistances des câbles connectés à la référence à étalonner et la résistance de sortie de la ré-férence à diode Zener sur la sortie 1,018 V (au maximum de 1 kΩ d'après le constructeur) conduit à une incertitude inférieure à 3 × 10 −10 en valeur relative. le gain dérive dans le temps, la linéarité reste relativement stable [27].…”

Section: éTalonnage De Références à Diode Zenerunclassified

Conception et applications d’un étalon Josephson programmable de 1 V au LNE

Djordjevic¹,

Seron²,

Monnoye³

et al. 2012

R. franç. métrol.

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RésuméLe LNE a développé récemment un système d'étalonnage de tension continue à partir d'un réseau de jonctions Josephson programmable de 1 V. Ce nouveau système, entièrement automatique, est spécifique-ment dédié aux activités de transfert, i.e. l'étalonnage de références de tension continue (références à diodes Zener et piles Weston) et de voltmètres numériques de grande précision. Il permet d'ores et déjà d'offrir de nouvelles possibilités d'étalonnage avec de meilleures incertitudes, tout en bénéficiant de la simplicité de mise en oeuvre des réseaux Josephson programmables. Ainsi la sortie 1,018 V des références de tension à diode Zener peut être étalonnée avec une incertitude relative typique de 80 nV (k = 2) dans le cadre de prestations courantes (soit une amélioration d'un facteur 7). Cet article décrit la conception de ce nouvel étalon et ses performances métrologiques.

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Voltage linearity measurements using a binary Josephson system

Cited by 18 publications

References 18 publications

Evaluation of Linearity Characteristics in Digital Voltmeters Using a PJVS System With a 10-K Cooler

Evaluation of Linearity Characteristics in Digital Voltmeters Using a PJVS System With a 10-K Cooler

The ampere and the electrical units in the quantum era

Conception et applications d’un étalon Josephson programmable de 1 V au LNE

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