Samuel P. Benz

Publications

1 GHz Waveform Synthesis with Josephson Arrays

July 31, 2019

Author(s):

Christine A. Donnelly, Justus A. Brevik, Nathan E. Flowers-Jacobs, Peter F. Hopkins, Paul D. Dresselhaus, Samuel P. Benz

For the first time, we synthesize single- and multiple-tone waveforms at gigahertz frequencies from arrays of Josephson junctions and demonstrate quantum-...

Quantized Pulse Propagation in Josephson Junction Arrays

July 23, 2019

Author(s):

Christine A. Donnelly, Justus A. Brevik, Nathan E. Flowers-Jacobs, Anna E. Fox, Paul D. Dresselhaus, Peter F. Hopkins, Samuel P. Benz

We present time-domain electrical measurements and simulations of the quantized voltage pulses that are generated from series-connected Josephson junction (JJ...

Induced Current Effects in Josephson Voltage Standard Circuits

March 08, 2019

Author(s):

Anna E. Fox, Grace E. Butler, Miranda L. Thompson, Paul D. Dresselhaus, Samuel P. Benz

A study has been performed to understand the effects of magnetic field induced current in Josephson voltage standard circuits. Inductive filtering is an...

Planarized process for single-flux-quantum circuits with self-shunted Nb/NbxSi1-x/Nb Josephson junctions

February 18, 2019

Author(s):

David I. Olaya, Manuel C. Castellanos Beltran, Javier Pulecio, John P. Biesecker, Soroush Khadem, Theodore Lewitt, Peter F. Hopkins, Paul D. Dresselhaus, Samuel P. Benz

We describe the single-flux-quantum (SFQ) circuit fabrication process employed at NIST's Boulder Microfabrication Facility. The process includes four...

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

February 11, 2019

Author(s):

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 NISTs development of Josephson junction-based programmable reference sources to synthesize quantum-accurate, spectrally-pure waveforms for...