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Search Publications

NIST Authors in Bold

Displaying 28476 - 28500 of 73697

Frequency comb spectroscopy with coherent optical sampling

April 20, 2009
Author(s)
Ian R. Coddington, Nathan R. Newbury, William C. Swann
A stabilized frequency comb provides a broadband array of highly resolved comb lines. Using a multiheterodyne technique, we measure the amplitude and phase of every comb line, allowing for massively parallel, high-resolution spectroscopy.

Markov Chain Analysis for Large-Scale Grid Systems

April 20, 2009
Author(s)
Christopher E. Dabrowski, Fern Y. Hunt
In large-scale grid systems with decentralized control, the interactions of many service providers and consumers will likely lead to emergent global system behaviours that result in unpredictable, often detrimental outcomes. This possibility argues for

A Ferroelectric Oxide Directly on Silicon

April 17, 2009
Author(s)
Joseph C. Woicik, Maitri P. Warusawithana, Cheng Cen, Charles R. Sleasman, Yulan Li, Jeffery Kluga, Lena F. Kourkoutis, Hao Li, Li-Peng Wang, Michael Bedzyk, David A. Muller, Long-Qing Chen, Jeremy Levy, Darrell G. Schlom
Silicon and silicon dioxide form what is arguably the most important technological interface. With the end of Moore s-law scaling for silicon fast approaching, alternatives to silicon dioxide are being pursued that may enable new device architectures and

Advancing Manufacturing Research Through Competitions

April 17, 2009
Author(s)
Stephen B. Balakirsky, Rajmohan Madhavan
Competitions provide a technique for building interest and collaboration in targeted research areas. This paper will present a new competition that aims to increase collaboration amongst Universities, automation end-users, and automation manufacturers

High Fidelity Transport of Trapped-Ion Qubits through an X-Junction Trap Array

April 17, 2009
Author(s)
Brad R. Blakestad, Aaron Vandevender, Christian Ospelkaus, Jason Amini, Joseph W. Britton, Dietrich G. Leibfried, David J. Wineland
Trapped ions are a useful system for studying the elements of quantum information processing. Simple alogrithms have been demonstrated, but scaling to much larter tasks requires the ability to manipulate many qubits. To achieve this, ions could be

Probing interactions between ultracold fermions

April 17, 2009
Author(s)
G K. Campbell, M M. Boyd, J W. Thomsen, M J. Martin, S Blatt, M D. Swallows, Travis L. Nicholson, Tara Fortier, Christopher W. Oates, Scott Diddams, Nathan D. Lemke, Pascal Naidon, Paul S. Julienne, Jun Ye, Andrew Ludlow
At ultracold temperatures, the Pauli exclusion principle suppresses collisions between identical fermions. This has motivated the development of atomic clocks using fermionic isotopes. However, by probing an optical clock transition with thousands of

Electromagnetically induced transparency in a superconducting three-level system

April 16, 2009
Author(s)
Mika Sillanpaa, Katarina Cicak, Fabio Altomare, Jae Park, Raymond Simmonds, Jian Li, G. S. Paraoanu, Pertti Hakonen
When a three-level quantum system is irradiated by an intense coupling field resonant with two of the three possible transitions, the resonant absorption of the system from its ground state by an additional radiation field is suppressed. This effect, where

A Module-Based Software System for Spindle Condition Monitoring

April 15, 2009
Author(s)
Kang B. Lee, Robert Gao, Ruqiang Yan , Li Zhang
Accurate identification of spindle working conditions is one of the key features of next generation smart machining systems with built-in, self-diagnosis capability. This paper presents a module-based software system designed to facilitate online spindle

Identities for Negative Moments of Quadratic Forms in Normal Variables

April 15, 2009
Author(s)
Andrew L. Rukhin
Two formulae for the central inverse moments of a Quadratic form in normal variables and of the ratio forms are established. They relate the quadratic form determined by a positive definite matrix to that defined by the inverse matrix.

Improved implementation of the Alicki Van Ryn nonclassicality test for a single particle using Si detectors

April 15, 2009
Author(s)
Sergey V. Polyakov, Alan L. Migdall, Giorgio Brida, Ivo P. Degiovanni, Marco Genovese, Fabrizio Piacentini, V Schettini, Nicolas Gisin
Recently a test of nonclassicality for a single qubit was proposed R. Alicki and N. Van Ryn, J. Phys, A: Math. Theor. 41, 062001 2008. We present an optimized experimental realization of this test leading to a 46standard deviation violation of classicality

Measuring 6LI(N,T) and 10B(N,A) Cross Sections Using the NIST Alpha-Gamma Device

April 15, 2009
Author(s)
Maynard S. Dewey, David M. Gilliam, Jeffrey S. Nico, G.L. Green, A. Laptev, A. Yue
The 6LI(N,T) and 10B(N,A) cross sections are important neutron cross section standards. Precise knowledge of these cross sections is essential because they are often used as reference standards for obtaining the neutron fluence in investigations of the

Research Required to Support Full Implementation of Performance-Based Seismic Design

April 15, 2009
Author(s)
William Holmes, Andre Filiatrault, John Hooper, Nicolas Luco, Jack Moehle, Maryann Phipps
To encourage further development of PBSD, FEMA commissioned several action plans that included work plans and budgets, and these efforts culminated in 2002 when FEMA provided the Applied Technology Council (ATC) with funding to develop next generation

Viscosity of H20 in the Critical Region

April 15, 2009
Author(s)
Jan V. Sengers, Richard A. Perkins, Marcia L. Huber, Daniel G. Friend
It has been well established that thermodynamic and transport properties of fluids exhibit singular behavior near the critical point. In this paper we review the theoretical predictions for the enhancement of the viscosity near the critical point. It is

A New Evaluation of the Half-life of 241Pu

April 14, 2009
Author(s)
Roger Wellum, Andre Verbruggen, Ruediger Kessel
A new evaluation of the half-life of 241Pu has been made by developing earlier methods and techniques and employing further measurements of the isotopic ratio of an initially enriched 241Pu material. A correction to the previous value has had to be made

Demonstration of Impedance Matching Using a mu-Negative (MNG) Metamaterial

April 14, 2009
Author(s)
Christopher L. Holloway, R. B. Greegor, C. G. Parazzoli, J. A. Nielsen, M. H. Tanielian, D Vier, S Schultz, Richard Ziolkowski
A mu-negative (MNG) metamaterial hemisphere was used to demonstrate impedance matching for a magnetic loop. The metamaterial was comprised of copper spirals deposited on an alumina substrate. The spirals, hemisphere, and magnetic loop were designed to

Quantum Resistant Public Key Cryptography: A Survey

April 14, 2009
Author(s)
Ray A. Perlner, David A. Cooper
Public key cryptography is widely used to secure transactions over the Internet. However, advances in quantum computers threaten to undermine the security assumptions upon which currently used public key cryptographic algorithms are based. In this paper

Reference Metrology in a Research Fab: The NIST Clean Calibrations Thrust

April 12, 2009
Author(s)
Ronald G. Dixson, Ndubuisi G. Orji, Joseph Fu, Thomas B. Renegar, Xiaoyu A. Zheng, Theodore V. Vorburger, Albert M. Hilton, Marc J. Cangemi, Lei Chen, Michael A. Hernandez, Russell E. Hajdaj, Michael R. Bishop, Aaron Cordes
In 2004, the National Institute of Standards and Technology (NIST) commissioned the Advanced Measurement Laboratory (AML) – a state-of-the-art, five-wing laboratory complex for leading edge NIST research. The NIST NanoFab – a 1765 m2 (19,000 ft2) clean
Displaying 28476 - 28500 of 73697
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