An AC Josephson Voltage Standard up to the Kilohertz Range Tested in a Calibration Laboratory

Schubert, M.; Starkloff, M.; Lee, Jinni; Behr, R.; Palafox, L.; Wintermeier, A.; Boeck, Andreas C.; Fleischmann, P. M.; May, T.

doi:10.1109/tim.2015.2416454

Cited by 26 publications

(29 citation statements)

References 17 publications

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“…Such a continuously changing voltage level is realised in an ACQVM (see e.g. [7] and [8]). In our setup we employ a commercial AC Quantum Voltmeter from the company Supracon [9].…”

Section: Methodsmentioning

confidence: 99%

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Measuring the Induced Ac Voltage in the Planck-Balance With an Ac Quantum Voltmeter

Rothleitner¹,

Kloß²,

Konrad³

2023

Proceedings of the 24th IMEKO TC3 Conference on Measurement of Force, Mass and Torque

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The Planck-Balance 1 (PB1) is a compact Kibble balance with the aim to calibrate weights of high quality. In contrast to most other Kibble balances PB1 employs a sinusoidal trajectory in the velocity mode, rather than a linear one. Thus, the induced voltage is an AC signal of 4 Hz. At PTB we implemented a commercial AC Quantum Voltmeter in order to ensure traceability to highest level. Here, we show the working principle along with some preliminary results.

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“…Such a continuously changing voltage level is realised in an ACQVM (see e.g. [7] and [8]). In our setup we employ a commercial AC Quantum Voltmeter from the company Supracon [9].…”

Section: Methodsmentioning

confidence: 99%

“…During the last years, however, much work has been done to accurately calibrate AC signals. The most accurate way is the use of an AC Quantum Voltmeter (ACQVM) [8]. The data analysis also is slightly different for an AC Kibble balance.…”

Section: Introductionmentioning

confidence: 99%

Measuring the Induced Ac Voltage in the Planck-Balance With an Ac Quantum Voltmeter

Rothleitner¹,

Kloß²,

Konrad³

2023

Proceedings of the 24th IMEKO TC3 Conference on Measurement of Force, Mass and Torque

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show abstract

“…Arbitrary waveform generators (AWG) consisting of 4 channels of DACs, which are previously used for this purpose in [14] are selected. Using a synchronization cable up to 8 of these generators can be synchronized and act as a 32-channel generator.…”

Section: Bias Electronicsmentioning

confidence: 99%

Establishing Programmable Josephson Voltage Standard and Maintaining Its Quantum Accuracy

Ozturk¹,

Ertürk²,

Tangel³

et al. 2019

IJEETC

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In this article, programmable Josephson voltage standard system established in TÜBİTAK UME is presented. The specifications of the instruments used in the system are defined and tested according to the needs of the system. Test setups are given in detail. The cryoprop used to immerse the superconducting integrated circuit into the liquid helium is manufactured. The horn antennas used in the waveguide part of the cryoprop are manufactured by employing wire erosion technique. The optical transceivers having low jitter for distributing trigger and clocks while keeping fully floating the system are manufactured. The software for generating quantum voltages and easy use of the system is prepared and equations used in the algorithm are given. The procedures to maintain the necessary accuracy of the bias electronics to maintain the quantum accuracy of the system is given in detail. The established system is used in metrological measurements and the results of the measurements which prove the quantum state of the system are presented. 

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“…To compare the measurements of the 4 types of finite impulse response filter [11] in the channel 1 for the PXI 5922, the timing shown in figure 6 is used. To simplify the measurement, only the 100 readings (16.6667 μs) following the first discarded 291 reading under the timing trigger are calculated, i.e.…”

Section: Iva Characterization Of the Digitizermentioning

confidence: 99%

Uncertainty estimation of non-ideal analog switches using programmable Josephson voltage standards for mutual inductance measurement in the joule balance

Wang

Zhang

et al. 2016

Meas. Sci. Technol.

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Measurement of the mutual inductance is one of the key techniques in the joule balance to determine the Planck constant h, where a standard-square-wave compensation method was proposed to accurately measure the dc value of the mutual inductance. With this method, analog switches are used to compose an analog-switch signal generator to synthesize the excitation and compensation voltages. However, the accuracy of the compensation voltage is influenced by the non-ideal behaviors of analog-switches. In this paper, the effect from these non-ideal switches is analyzed in detail and evaluated with the equivalent circuits. A programmable Josephson voltage standard (PJVS) is used to generate a reference compensation voltage to measure the time integration of the voltage waveform generated by the analog-switch signal generator. Moreover, the effect is also evaluated experimentally by comparing the difference between the mutual inductance measured with the analog-switch signal generator and the value determined by the PJVS-analog-switch generator alternately in the same mutual inductance measurement system. The result shows that the impact of analog switches is 1.97 × 10 −7 with an uncertainty of 1.83 × 10 −7 (k = 1) and confirms that the analog switch method can be used regularly instead of the PJVS in the mutual inductance measurement for the joule balance experiment.

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An AC Josephson Voltage Standard up to the Kilohertz Range Tested in a Calibration Laboratory

Cited by 26 publications

References 17 publications

Measuring the Induced Ac Voltage in the Planck-Balance With an Ac Quantum Voltmeter

Measuring the Induced Ac Voltage in the Planck-Balance With an Ac Quantum Voltmeter

Establishing Programmable Josephson Voltage Standard and Maintaining Its Quantum Accuracy

Uncertainty estimation of non-ideal analog switches using programmable Josephson voltage standards for mutual inductance measurement in the joule balance

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