AC–DC Transfer Standard Measurements and Generalized Compensation With the AC Josephson Voltage Standard

Kieler, Oliver; Landim, Regis Pinheiro; Benz, Samuel P.; Dresselhaus, Paul D.; BurroughsJr, C.J.

doi:10.1109/tim.2007.913817

Cited by 21 publications

(5 citation statements)

References 16 publications

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“…In parallel, two papers starting from different physical assumptions came to approximately the same result-the level of quantization for the RMS value of JWS waveforms is limited (Burroughs et al 2008. It can be expressed e.g.…”

Section: Thermal Converter Measurementsmentioning

confidence: 93%

Development and metrological applications of Josephson arrays at PTB

Behr¹,

Kieler²,

Kohlmann³

et al. 2012

Meas. Sci. Technol.

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The discovery of the Josephson effects 50 years ago initiated a revolution for electrical voltage metrology. This revolution started with single Josephson junctions delivering a few millivolt at most. Meanwhile, highly integrated series arrays containing more than 10 000 or even 300 000 junctions have been developed and fabricated for output voltages up to 10 V. Josephson voltage standards are nowadays used in many laboratories worldwide for dc applications. After their adoption for the representation of the unit of voltage in 1990, the focus of research shifted towards programmable Josephson series arrays. The increasing interest in highly precise ac voltages resulted in new developments for their metrological applications in the last 15 years. This paper summarizes the principal contributions from PTB to the present state of Josephson voltage standards with particular focus on developments and applications for ac standards in metrology and our proof-of-concept demonstrations. The presentation includes the two most promising versions of ac standards, being the programmable Josephson voltage standard based on binary divided series arrays and the Josephson arbitrary waveform synthesizer based on a pulse-driven series array.

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Section: Thermal Converter Measurementsmentioning

confidence: 93%

Development and metrological applications of Josephson arrays at PTB

Behr¹,

Kieler²,

Kohlmann³

et al. 2012

Meas. Sci. Technol.

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“…The intrinsic accuracy of the ACJVS is derived from the perfect quantization of voltage pulses generated by each Josephson junction in the array [6][7][8][9]. The ACJVS produces ac waveforms using a digital-to-analogue synthesis technique based on delta-sigma modulation and oversampling.…”

Section: Acjvs Circuitsmentioning

confidence: 99%

Thermal voltage converter calibrations using a quantum ac standard

et al. 2008

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We report on the first-ever use of a quantum ac source to calibrate a thermal transfer standard as part of the NIST calibration service for such devices, with reductions in calibration uncertainty of as much as an order of magnitude over traditional ac-dc transfer methods. We briefly describe the basic quantum ac calibration system, its operation and measurement results. An analysis of the uncertainties for the measurements is presented and plans for further development are described.

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“…Measurements on different JAWS, however, have shown slight voltage deviations, presumably due to inherent systematic errors for signal frequencies above 10 kHz [11]. The understanding and mitigating of these deviations at higher signal frequencies, in order to ensure the accuracy of the synthesized AC voltage, is a major task.…”

Section: Introductionmentioning

confidence: 99%

Measurement and analysis of high-frequency voltage errors in the Josephson arbitrary waveform synthesizer

Kraus

Drung

Behr

et al. 2020

Meas. Sci. Technol.

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This paper reports on the comparison of two Josephson arbitrary waveform synthesizers for frequencies up to 500 kHz. Both independent pulse-driven Josephson arrays produce a 10 mV RMS sinusoidal voltage. They are alternately connected to an analog-to-digital converter which serves as a transfer standard. The setup is capable to of synthesizing quantum-based waveforms using two different pulse-bias techniques. We use the Zero-Compensation method and a two-pole high-pass filter structure in the pulse-bias configuration of one system (the reference) to minimize the amplitude error for signal frequencies up to 500 kHz. Consequently, we are able to directly detect the high-frequency voltage errors in the other system (the device under test). The setup is used to measure differences between both systems, and the influence of parameter variation on the results with Type A uncertainties of 0.4 µV/V (k = 1) in measurement times of 60 s. We find that the dominant sources of deviations above 10 kHz can be traced to the influence of the output cabling and the pulse bias on the synthesized voltage signal. Our analysis explains the origin and the reduction of these high-frequency voltage errors.

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AC–DC Transfer Standard Measurements and Generalized Compensation With the AC Josephson Voltage Standard

Cited by 21 publications

References 16 publications

Development and metrological applications of Josephson arrays at PTB

Development and metrological applications of Josephson arrays at PTB

Thermal voltage converter calibrations using a quantum ac standard

Measurement and analysis of high-frequency voltage errors in the Josephson arbitrary waveform synthesizer

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