Benz, S.
(2024),
AC Metrology Applications of the Josephson Effect, Applied Physics Letters, [online], https://doi.org/10.1063/5.0219991, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=957989 (Accessed April 23, 2026)
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AC Metrology Applications of the Josephson Effect
Published
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Abstract
The performance of programmable voltage signals that exploit the quantum behavior of superconducting Josephson junctions continues to improve and enable new capabilities for applications in metrology, communications, and quantum control. We present the state-of-the-art advances in pulse-driven digital synthesis techniques with Josephson-junction-based devices. Unprecedented performance for synthesized voltage waveforms has been achieved at different frequencies, including rms amplitudes of 4 V at 1 kHz, 50 mV at 50 MHz, and 22 mV at 1.005 GHz [1-3]. Josephson pulse generators have also successfully controlled and characterized superconducting qubits with a gate fidelity of 99.5% [4]Citation
Applied Physics Letters
Volume
125
Issue
5
Pub Type
Journals
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Keywords
metrology, measurement units, quantum metrology, Standards, voltage standards, digital-analog conversion, signal synthesis, Josephson junctions, arrays, superconducting integrated circuits, superconducting microwave devices, quantization, radio frequencies.
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Created July 31, 2024, Updated October 29, 2024