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Progress Toward Practical AC and DC Josephson Voltage Standards at NIST



Samuel Benz, Charles J. Burroughs, Paul Dresselhaus, Nicolas Hadacek, Yonuk Chong


For the past 10 years NIST has been developing the next generation of voltage standard systems based on arrays of normal-metal barrier Josephson junctions. We have developed stable, programmable dc standards capable of providing intrinsically stable voltages up to 3.5 V. The first ac Josephson standards have also been demonstrated at audio frequencies with output voltages of 136 mV rms and ppm accuracy. We will describe the features and characteristics of these systems as well as the Josephson junction and system technology that makes them possible.
Proceedings Title
Proc. VI Semetro
Conference Dates
September 21-23, 2005
Conference Location
Rio de Janeiro, 1, BR
Conference Title
VI Semetro 6th International Seminar on Electrical Metrology


Josephson array, microwave, superconductor, voltage standard, waveform synthesis


Benz, S. , Burroughs, C. , Dresselhaus, P. , Hadacek, N. and Chong, Y. (2005), Progress Toward Practical AC and DC Josephson Voltage Standards at NIST, Proc. VI Semetro, Rio de Janeiro, 1, BR, [online], (Accessed June 20, 2024)


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Created September 20, 2005, Updated October 12, 2021