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Superconductive Electronics Group

Exploits the quantum behavior of superconducting Josephson junctions and materials to develop novel superconducting electronic devices, circuits, systems, and precision measurement techniques for state-of-the-art electrical measurements.

The Superconductive Electronics Group utilizes the quantum effects of Josephson junctions in specialized superconducting integrated circuits to improve measurement technology and standards for fundamental metrology, such as for dc and ac voltage, waveform synthesis, and primary thermometry, and for applications that require high-performance, such as energy-efficient advanced computing and RF communications. The Quantum Voltage and Noise Thermometry Projects develop and disseminate standard reference instruments and measurement best practices for dc and ac voltage metrology, RF metrology and primary thermometry. The Flux Quantum Electronics Project develops cryogenic superconductive circuits and measurement techniques for advanced, energy-efficient computing, RF communications, and electrical metrology.

Voltage Metrology with Superconductive Electronics

Voltage Metrology with Superconductive Electronics presentation

Presenter: Sam Benz
Fundamental standards for voltage, dc and ac, are based on the Josephson Effect. In this talk from the Applied Superconductivity Conference 2016, Sam Benz discusses the development, state-of-the-art, and future prospects for these standards.

PDF Files: Abstract | Annotated slides


Quantum Locking Ranges

Visualizations of Quantum Locking Ranges for the Programmable Josephson Voltage Standard (PJVS) and Josephson Arbitrary Waveform Synthesizer (JAWS).

News and Updates

Projects and Programs

Noise Thermometry

The Noise Thermometry Project is applying quantum-based voltage waveform synthesis to a precision measurement of Boltzmann's constant kB by developing a primary

Quantum Voltage Project

Developing Josephson Voltage Standard systems in order to improve the accuracy of both ac and dc voltage measurements. Both liquid-helium based systems and

Flux Quantum Electronics

NIST researchers in the Flux Quantum Electronics (FQE) project develop cryogenic superconductive circuits and measurement techniques for advanced, energy


Josephson Junctions for Metrology Applications

Samuel P. Benz
The Josephson effect has revolutionized voltage metrology [1-5] and, together with the quantum Hall effect for resistance and atomic clocks for time and

RF waveform synthesizers with quantum-based voltage accuracy for communications metrology

Peter F. Hopkins, Justus A. Brevik, Manuel C. Castellanos Beltran, Nathan E. Flowers-Jacobs, Anna E. Fox, David I. Olaya, Christine A. Donnelly, Paul D. Dresselhaus, Samuel P. Benz
We report on NIST’s development of Josephson junction-based programmable reference sources to synthesize quantum-accurate, spectrally-pure waveforms for


2008 APS Fellow - Samuel Benz

The criterion for election is exceptional contributions to the physics enterprise; e.g., outstanding physics research, important...

2004 APS Fellow - Robert Schwall

The criterion for election is exceptional contributions to the physics enterprise; e.g., outstanding physics research, important...


Group Leader

Project Leaders