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Quantum Calibration System for Digital Voltmeters at Voltages from 10 nV to 1 kV

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4 Author(s)
Georgakopoulos, D. ; Nat. Meas. Inst., West Lindfield, NSW, Australia ; Budovsky, I. ; Grady, S. ; Hagen, T.

We have developed a programmable Josephson voltage standard that can generate voltages up to 20 V with a resolution of 10 nV. The standard has two superconductor-normal metal-superconductor junction arrays connected in series and driven by two radio frequency oscillators. The standard has been integrated into a digital voltmeter calibration system for voltages from 10 nV up to 1000 V. The expanded uncertainty (k = 2) of the system is approximately 10 nV for voltages up to 20 V and 0.9 μV/V in the voltage range from 20 to 1000 V.

Published in:

Instrumentation and Measurement, IEEE Transactions on  (Volume:62 ,  Issue: 6 )

Date of Publication:

June 2013

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