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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

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Projects and Programs

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 k B by developing a


Practical realisation of the kelvin by Johnson noise thermometry

Horst Rogalla, D Rod White, Jifeng Qu, Samuel P. Benz, Christof Gaiser, Weston L. Tew, Nathan Flowers-Jacobs, Kevin J. Coakley, Alessio Polarollo, Chiharu Urano
Johnson noise thermometry (JNT) is a purely electronic method of thermodynamic thermometry. In primary JNT, the temperature is inferred from a comparison of the

Quantum-Based Microwave Modulated Waveforms

Akim Babenko, Nathan Flowers-Jacobs, Anna Fox, Paul Dresselhaus, Zoya Popovic, Samuel P. Benz
This paper presents a superconducting voltage source that generates microwave modulated waveforms with quantum-based stability. The voltage source - an RF


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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