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NIST Authors in Bold

Displaying 4876 - 4900 of 9856

Single-Photon Detector Calibration

July 7, 2015
Author(s)
Sergey V. Polyakov
… operation and approach the problem from the viewpoint of quantum measurement theory to characterize the detection of arbitrary input quantum states (i.e. find a detector’s POVM), although in …

1 V Josephson arbitrary waveform synthesizer

September 17, 2014
Author(s)
Samuel P. Benz, Steven B. Waltman, Anna E. Fox, Paul D. Dresselhaus, Alain Rufenacht, Jason M. Underwood, Charles J. Burroughs
… A quantum-accurate waveform with a root-mean-square (RMS) … pulse bias technique was used to bias into the second quantum state a superconducting integrated circuit with …

Order by Disorder Spin Wave Gap in the XY Pyrochlore Magnet Er 2 Ti 2 O 7

February 4, 2014
Author(s)
Kathryn Aileen Ross, Yiming Qiu, John R. Copley, H. A. Dabkowska, B. D. Gaulin
… 2 Ti 2 O 7 reveals a most convincing case of the ¿order by quantum disorder¿ (ObQD) mechanism for ground state selection. This mechanism relies on quantum fluctuations to remove an accidental symmetry of the …

Two-Loop Bethe Logarithms for non-S Levels

October 16, 2008
Author(s)
Ulrich D. Jentschura
… for Rydberg states with high angular momentum quantum numbers. Our results reach the predictive limits of the quantum electrodynamic theory of the Lamb shift. …

100 mV AC-DC Transfer Standard Measurements Using An AC Josephson Voltage Standard

June 1, 2006
Author(s)
Charles J. Burroughs, Samuel Benz, Paul Dresselhaus
… dc voltages and ac sinewaves, so that it can be used as a quantum-based voltage source for ac metrology. In this paper, … of a practical ac Josephson voltage standard based upon a quantum voltage source that produces precisely calculable ac …

Present Status of Radiometric Quality Silicon Photodiodes

February 1, 2003
Author(s)
R Korde, C Prince, N. Cunningham, Robert E. Vest, E Gullikson
… front window. Fabrication of photodiodes 100% internal quantum efficiency is demonstrated and their necessity for … the radiometric community. Results on the stability of the quantum efficiency of the fabricated diodes after exposure to …

A demonstration of Low Power Wide Area Networking for city-scale monitoring applications

September 25, 2019
Author(s)
Sebastian Barillaro, Dhananjay Anand, Avi Gopstein, Julian Barillaro
Networks of sensors are key components of an Internet of Things. This paper outlines a demonstration of a wireless technology called LoRa/LoRaWAN that may be used to network sensors over a range of several kilometers. LoRa is an example of a Low Power Wide

How High a Degree is High Enough for High Order Finite Elements?

January 1, 2015
Author(s)
William F. Mitchell
High order finite element methods can solve partial differential equations more efficiently than low order methods. But how large of a polynomial degree is beneficial? This paper addresses that question through a case study of three problems representing

The EXPRESS Web Server

February 1, 1999
Author(s)
Joshua Lubell, David A. Sauder
… ACM Symposium on Applied Computing …

Robot Simulation Physics Validation

December 28, 2007
Author(s)
Christopher T. Pepper, Stephen B. Balakirsky, Christopher J. Scrapper Jr
Computer simulation of robot performance is an essential tool for the development of robot software. In order for simulation results to be valid for implementation, model accuracy is important. If developers use a robot model that is not similar enough to

The Analysis, Synthesis, and Description of Biological Images

January 1, 1966
Author(s)
Russell A. Kirsch, L Lipkin, W Watt
We will begin by asking if the prevailing notion of what computer systems can achieve in biological image-processing may not be overly modest. This question seems to us fundamental, for such an underestimate might produce not only a limitation of

Structure and Properties of Silica Nanoclusters at High Temperatures

June 1, 2002
Author(s)
I V. Schweigert, K E. Lehtinen, Michael J. Carrier, Michael R. Zachariah
The properties of silica clusters at temperatures from 1500 to 2800 K are investigated using classical molecular dynamics simulations for particles containing up to 1152 atoms. We found that atoms in the cluster were arranged in a shell-like structure at

Time-Resolved Infrared Studies of a Trimethylphosphine Model Derivative of [FeFe]-Hydrogenase

October 1, 2013
Author(s)
Edwin J. Heilweil, Christopher J. Stromberg, Melissa Johnson, James Thuman, Roger G. Letterman, Webster E. Charles
Model compounds that structurally mimic the hydrogen-producing active site of [FeFe] hydrogenases have been explored. In order to explore potential ground-state electronic structure effects on reaction mechanisms compared to hexacarbonyl derivatives, the

Approach to Modeling Flame Spread Over Polyurethane Foam-Covered Walls. (POSTER ABSTRACTS)

September 1, 2005
Author(s)
Daniel M. Madrzykowski, Stephen Kerber, Nelson P. Bryner, William L. Grosshandler
Computer simulation has been demonstrated to be credible, when properly applied, as a tool to help fill in critical details of a fire incident and to demonstrate the value of alternative building designs and fire safety measures. This poster presents the

The Path to Cloud Federation through Standardization

November 25, 2022
Author(s)
Robert B. Bohn
… This paper describes the efforts of the NIST Cloud Computing Program in the development of understanding the … NIST Cloud Computing Program, IEEE 2302- 2021 Standard for Intercloud …

Pulse Patterns for the Josephson Arbitrary Waveform Synthesizer

August 30, 2024
Author(s)
Nathan Flowers-Jacobs, Raegan Johnson, Jeremy Thomas, Alain Rufenacht, Anna Fox, Paul Dresselhaus, Samuel Benz
… algorithms are used to determine the desired sequence of quantum-based voltage pulses used by the Josephson Arbitrary …

Theory of Spin Transfer Torque

September 1, 2007
Author(s)
Mark D. Stiles
… terms of semiclassical transport calculations coupled with quantum mechanical calculations of the behavior of spins at …
Displaying 4876 - 4900 of 9856
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