AC Metrology Applications of the Josephson Effect

Published

July 31, 2024

Author(s)

Samuel Benz

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

Download Paper

https://doi.org/10.1063/5.0219991

Local Download

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.

Citation

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 October 10, 2025)