Direct Comparison of Josephson Waveforms Using an AC Quantum Voltmeter

Behr, R.; Palafox, L.; Ramm, G.; Moser, Harald; Melcher, J.

doi:10.1109/tim.2007.891076

Cited by 107 publications

(67 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previously, we demonstrated how to implement a differential sampling method with a 2.5 V PJVS for measuring 1.2 V RMS amplitudes for a new electrical power standard at NIST [3]. This straightforward sampling method can characterize any signal up to the maximum voltage of the PJVS by the use of a stepwiseapproximated sine wave that is synthesized with the PJVS [4]- [9]. The first demonstrations of the sampling method were accomplished by comparing two PJVS waveforms [4], [5].…”

Section: Introductionmentioning

confidence: 99%

“…This straightforward sampling method can characterize any signal up to the maximum voltage of the PJVS by the use of a stepwiseapproximated sine wave that is synthesized with the PJVS [4]- [9]. The first demonstrations of the sampling method were accomplished by comparing two PJVS waveforms [4], [5]. Each step of the PJVS waveform provides a quantum-accurate voltage reference at each sample point.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Differential Sampling Measurement of a 7 V RMS Sine Wave With a Programmable Josephson Voltage Standard

Rüfenacht

Burroughs

Dresselhaus

et al. 2013

IEEE Trans. Instrum. Meas.

View full text Add to dashboard Cite

A 10 V programmable Josephson voltage standard has enabled sine waves with voltages up to 7 V RMS to be accurately measured with a differential sampling measurement technique. Expanding the voltage range for this technique enables the direct calibration of the low-frequency ranges of commercial calibrators in the ac voltage mode. This paper reviews the practically achievable performance and challenges of the differential sampling measurement technique that arise when measuring RMS voltages greater than a few volts. A relative Type A uncertainty of 4 parts in 10 7 was achieved with the technique when measuring a 7 V RMS sine wave generated by a calibrator at 62.5 Hz. 1

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Differential Sampling Measurement of a 7 V RMS Sine Wave With a Programmable Josephson Voltage Standard

Rüfenacht

Burroughs

Dresselhaus

et al. 2013

IEEE Trans. Instrum. Meas.

View full text Add to dashboard Cite

show abstract

“…To improve the measurement uncertainty, a Josephson voltmeter system was set up [7]. The system is based on a programmable Josephson voltage standard to compensate the voltage to measure, and a voltmeter at its lowest range (100 mV) to measure the remaining differential voltage.…”

Section: B Improved Cryocap Voltage Measurementmentioning

confidence: 99%

Improved performance of the ECCS experiment at PTB

Scherer

Camarota

Keller

et al. 2012

2012 Conference on Precision Electromagnetic Measurements

View full text Add to dashboard Cite

Recent improvements on the ECCS experiment at PTB are reported. A 5-junction single-electron R-pump is shown to shuttle electrons with a relative transfer error of 5×10 -8 . Moreover, the relative uncertainty of the setup for the cryogenic capacitor voltage measurement has been reduced to u rel < 10 -9 . Further perspectives related to data evaluation and analysis on the ECCS experiment is also discussed.

show abstract

“…On the other hand, PJVS is also attractive in AC voltage fields. Though so-called transient error makes rms values of the AC waveforms generated with PJVS [3], sampling methods can enable us to avoid the effects of the error [4], [5].…”

Section: Introductionmentioning

confidence: 99%

Generation of 10 Vrms waveforms using AC-programmable Josephson voltage standard system with 10 K cooler

Maruyama

Amagai

Yamamori

et al. 2014

29th Conference on Precision Electromagnetic Measurements (CPEM 2014)

View full text Add to dashboard Cite

We have succeeded in synthesizing AC waveforms with the rms voltage of greater than 10 V using an ACprogrammable Josephson voltage standard (AC-PJVS) system. The system has a NbN-based junction array, which is cooled with a compact cryocooler. The array is composed of total 524 288 junctions, enabling to generate arbitrary signals with the maximum output level of about 17 V for 15.9 GHz microwave input. In this experiment, we used a modified bias circuit with 6 parts of floating channels for eliminating interferences and also saturation in the output level. We will also discuss about heating effect of the 10 Vrms chip in the situation of using a mechanical cooler.

show abstract

Direct Comparison of Josephson Waveforms Using an AC Quantum Voltmeter

Cited by 107 publications

References 14 publications

Differential Sampling Measurement of a 7 V RMS Sine Wave With a Programmable Josephson Voltage Standard

Differential Sampling Measurement of a 7 V RMS Sine Wave With a Programmable Josephson Voltage Standard

Improved performance of the ECCS experiment at PTB

Generation of 10 Vrms waveforms using AC-programmable Josephson voltage standard system with 10 K cooler

Contact Info

Product

Resources

About