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Josephson Arbitrary Waveform Synthesizer as a Reference Standard for the Calibration of Lock-in Amplifiers

Published

Author(s)

Dimitrios Georgakopoulos, Ilya F. Budovsky, Samuel P. Benz

Abstract

We have extended the voltage range of the Josephson arbitrary waveform synthesizer from 1 mV down to 1 μV at frequencies from 60 Hz to 1 kHz to calibrate precision lock-in amplifiers. Experimental results show that the system's uncertainty is dominated by the resolution of the lock-in amplifier. We anticipate that the Josephson arbitrary waveform synthesizer-based system will extend the lower voltage and frequency range of ac voltage metrology and improve the uncertainties by one order of magnitude compared to conventional techniques.
Conference Dates
August 24-28, 2020
Conference Location
Denver, CO
Conference Title
2020 Conference on Precision Electromagnetic Measurements (CPEM)

Keywords

digital-analog conversion, Josephson arbitrary waveform synthesizer, Josephson arrays, quantization, signal synthesis, standards, superconducting integrated circuits, voltage measurement
Created August 23, 2020, Updated September 28, 2020