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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

News and Updates

Uncrunching the Frequency Spectrum

The squeeze is here, and the crunch is coming. Soon. Explosive demand for high-speed wireless communication is placing growing pressure on the limited frequency

Noise, Temperature, and the New SI

NIST has recently made substantial improvements to its Johnson-noise thermometry system, which is playing a vital role in the worldwide effort to determine the

Projects and Programs

Quantum Voltage Project

Goal: To develop Josephson voltage standard (JVS) systems to improve the dissemination of primary standards and the accuracy of voltage measurements from DC to

Flux Quantum Electronics

Researchers in the Flux Quantum Electronics (FQE) Project exploit the inherent quantum behavior of superconductivity to develop cryogenic superconductive

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


Josephson Microwave Sources Applied to Quantum Information Systems

Adam J. Sirois, Manuel C. Castellanos Beltran, Anna E. Fox, Samuel P. Benz, Peter F. Hopkins
Quantum computers with thousands or millions of qubits will require a scalable solution for qubit control and readout electronics. Colocating these electronics

Cryogenic Calibration of a Quantum-based Radio Frequency Source

Alirio De Jesus Soares Boaventura, Justus A. Brevik, Dylan Williams, Anna E. Fox, Manuel C. Castellanos Beltran, Peter F. Hopkins, Paul D. Dresselhaus, Samuel P. Benz
We report on the calibration of quantum-based radio frequency waveforms generated by a Josephson arbitrary waveform synthesizer system. We measure these


2019 Van Duzer Prize

The paper "1 GHz Waveform Synthesis with Josephson Junction Arrays", IEEE Transactions on Applied Superconductivity vol. 30, no. 3, article


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