U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Samuel P. Benz (Fed)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 376 - 400 of 558

Flexible Cryo-packages for Josephson Devices

June 1, 2005
Author(s)
Charles J. Burroughs, Samuel Benz, Paul Dresselhaus, Yonuk Chong, Hirotake Yamamori
We have developed a method of bonding superconductive integrated-circuit chips to interchangeable, microwave-compatible, flexible cryo-packages. This new 'flip-chip on flex' technology will greatly improve the service life and reliability of our Josephson

Practical High-Resolution Programmable Josephson Voltage Standards using Double- and Triple-Stacked MoSi 2 -Barrier Junctions

June 1, 2005
Author(s)
Yonuk Chong, Charles J. Burroughs, Paul Dresselhaus, Nicolas Hadacek, Hirotake Yamamori, Samuel Benz
We have developed vertically stacked superconductor-normal metal- superconductor Josephson junction technology for the next generation quantum voltage standards. Stacked junctions provide a practical way of increasing the output voltage and operating

Stacked Niobium-MoSi 2 -Niobium Josephson Junctions for AC Voltage Standards

June 1, 2005
Author(s)
Paul Dresselhaus, Yonuk Chong, Samuel Benz
Superconductor-normal metal-superconductor (SNS) Josephson junctions have proven to be a critical technology for voltage standards. NIST has used SNS junctions for both programmable DC and AC voltage standards. Previous devices have primarily used PdAu as

Precision Measurements of AC Josephson Voltage Standard Operating Margins

April 1, 2005
Author(s)
Charles J. Burroughs, Samuel P. Benz, Paul D. Dresselhaus, Yonuk Chong
Recent advances in circuit design and fabrication of superconducting integrated circuits have enabled us to demonstrate an ac Josephson voltage standard (ACJVS) that generates both ac and dc waveforms up to 242mV peak voltage. Using a Fast Fourier

Progress on Johnson Noise Thermometry using a Quantum Voltage Noise Source for Calibration

April 1, 2005
Author(s)
Sae Woo Nam, Samuel P. Benz, Paul D. Dresselhaus, Charles J. Burroughs, Weston L. Tew, D. R. White, John M. Martinis
We describe our progress towards a high-precision measurement of temperature using Johnson noise. Using a Quantized Voltage Noise Source (QVNS) based on the Josephson effect as a calculable noise source, we have been able to measure the ratio of the

Application of the Josephson Effect to Metrology

October 1, 2004
Author(s)
Samuel P. Benz, Clark Hamilton
The unique ability of a Josephson junction to control the flow of magnetic flux quanta leads to a perfect relationship between frequency and voltage. Over the last 30 years, metrology laboratories have used this effect to greatly improve the accuracy of dc

Double-stacked MoSi2-barrier junctions for programmable Josephson voltage standards

June 1, 2004
Author(s)
Yonuk Chong, Charles J. Burroughs, Paul D. Dresselhaus, Nicolas Hadacek, Hirotake Yamamori, Samuel P. Benz
We are developing MoSi2-barrier stacked junction arrays for Josephson voltage standards in order to increase the output voltage, operating bandwidth, and operating margins. In this paper we present results of a programmable voltage standard circuit with

Flat-Spot Measurements for an AC Josephson Voltage Standard

June 1, 2004
Author(s)
Charles J. Burroughs, Samuel P. Benz, Paul D. Dresselhaus, Yonuk Chong
Recent advances in circuit design and fabrication of superconducting integrated circuits have enabled us to demonstrate for the first time an ac Josephson voltage standard (ACJVS) that generates both ac and dc waveforms up to 242 mV peak voltage. Using a

Johnson Noise Thermometry Using a Quantum Voltage Noise Source for Calibration

June 1, 2004
Author(s)
Sae Woo Nam, Samuel P. Benz, Paul D. Dresselhaus, Weston L. Tew, D. R. White, John M. Martinis
We describe our progress towards a high-precision measurement of temperature using Johnson noise. Using a Quantized Voltage Noise Source (QVNS) based on the Josephson effect as a calibrated noise source, we have been able to measure the gallium and water