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Search Publications

NIST Authors in Bold

Displaying 1751 - 1775 of 9850

An External Stopwatch for Measuring the Timing of Events in a Computer or Distributed Computing Environment

September 24, 2005
Author(s)
Eric D. Simmon, Ya-Shian Li-Baboud, John V. Messina
… is not a trivial task. Due to the virtual nature of a computer system, most conventional operating system provide … for accurate time measurement. In addition, standard computer clocks can drift unpredictably depending on … future enhancements. The system consists of a stand-alone computer with an accurate data acquisition card and data …

Orbital quantum magnetism in spin dynamics of strongly interacting magnetic lanthanide atoms

May 31, 2018
Author(s)
Ming Li, Eite Tiesinga, Svetlana Kotochigova
… candidates with which to study strong and unconventional quantum magnetism with exotic phases. Here, we use state-of-the-art closed-coupling simulations to model quantum magnetism for pairs of ultracold spin-6 erbium … these strong anisotropic interactions and unconventional quantum magnetism. Multi- channel simulations of magnetic Cr …

Frequency-comb spectroscopy on pure quantum states of a single molecular ion

March 27, 2020
Author(s)
Chin-wen Chou, Alejandra L. Collopy, Christoph Kurz, Yiheng Lin, Michael E. Harding, Philipp N. Plessow, Tara M. Fortier, Scott A. Diddams, Dietrich G. Leibfried, David R. Leibrandt
… and limited resolution. Here, we use generally applicable quantum-logic techniques to prepare a single trapped molecular ion in a pure quantum state, drive terahertz rotational transitions with an … Frequency-comb spectroscopy on pure quantum states of a single molecular ion …

Observation and control of the anomalous Aharonov-Bohm oscillation in enhanced-mode topological insulator nanowire field-effect transistors

August 14, 2019
Author(s)
Hao Zhu, Curt Richter, Sheng Yu, Huixian Ye, Min Zeng, Qiliang Li
… The Aharonov-Bohm (AB) oscillation is a quantum mechanical phenomenon which reveals the coupling of … function, affecting the phase of the wave function. Such quantum interference effect can be demonstrated through the … can be very attractive for further exploration of quantum phase interference through electrical approaches …

Exploring Registration of Optical, CMM and XCT for Verification of Supplemental Surfaces to Define AM Lattices: Application to Cylindrical and Spherical Surfaces

August 25, 2021
Author(s)
Maxwell Praniewicz, Jason Fox, Gaurav Ameta, Felix Kim, Paul Witherell, Christopher Saldana
The use of lattice structures produced using additive manufacturing (AM) is of great interest to the aerospace and medical industries because of their potential for strength/weight optimization. However, their use is often limited due to challenges in

Electron Counting Capacitance Standard with an improved five-junction R-pump

November 7, 2011
Author(s)
Benedetta Camarota, Hansjoerg Scherer, Sergey Lotkhov, Gerd-Dietmar Willenberg, Franz Josef Ahlers, Mark W. Keller
… currently pursued at PTB, aims at the closure of the Quantum Metrological Triangle with a final precision of a few … The preliminary result for the single-electron charge quantum has an uncertainty of less than two parts in 10 6 and … single-electron tunneling, quantum metrology triangle, capacitance standard …

Orientation Dependence of the Magnetic Phase Diagram of Yb 2 Ti 2 O 7

May 21, 2020
Author(s)
S. Saubert, A. Scheie, C. Duvinage, J. Kindervater, S. Zhang, H. J. Changlani, Guangyong Xu, S. M. Koohpayeh, O. Tchernyshyov, Collin L. Broholm, C. Pfleiderer
… In the quest to realize a quantum spin liquid (QSL), magnetic long-range order is … well as the anisotropy of the upper critical field in the quantum limit. … neutron scattering, quantum spin liquid …

Performance Measurement of Remote ATM Clusters

April 1, 1999
Author(s)
C Martin, Alan Mink, Wayne J. Salamon, Michael D. Indovina, M M. Courson
… the configuration and performance of remote commodity computing clusters. This is the dynamic pooling of separate … networks add little additional overhead to remote cluster computing applications, whereas routers can a have … ATM networks, ATM switch configuration, cluster computing, computing cluster, distributed computing, …

Investigating Global Behavior in Computing Grids

September 1, 2006
Author(s)
Kevin L. Mills, Christopher E. Dabrowski
… This paper presents an executable model of grid computing systems and a measurement approach, based on … understanding of behavior in distributed systems such as computing grids. … Investigating Global Behavior in Computing Grids …

Accelerated Green's function molecular dynamics

April 16, 2022
Author(s)
Vitor R. Coluci, Socrates de Oliveira Dantas Dantas, Vinod Tewary
A Green's function formalism has been applied to solve the equations of motion in classical molecular dynamics simulations. This formalism enables larger time scales to be probed for vibration processes in carbon nanomaterials. In Green's function

Direct Observation of Zitterbewegung in a Bose-Einstein condensate

July 3, 2013
Author(s)
Lindsay J. LeBlanc, Matthew Beeler, Karina Jimenez-Garcia, Abigail R. Perry, Seiji Sugawa, Ross Williams, Ian B. Spielman
… consequence of the Dirac equation's unification of quantum mechanics and special relativity. Though the … with electrons, zitterbewegung is observable via quantum simulation. We engineered an environment for 87Rb … clouds, demonstrating the utility of neutral ultracold quantum gases for simulating Dirac particles. …

1310 nm Differential Phase Shift QKD System Using Superconducting Single Photon Detectors

April 30, 2009
Author(s)
Xiao Tang, Lijun Ma, Sae Woo Nam, Burm Baek, Oliver T. Slattery, Alan Mink, Hai Xu, Tiejun Chang
… We have implemented a differential-phase-shift (DPS) quantum key distribution (QKD) system at 1310 nm with … and its dark counts are very low. 1310 nm is an ideal quantum signal wavelength for a QKD system, where quantum signals coexist with classical communication signals …

Experimental Determination of the Motional Quantum State of a Trapped Atom

January 1, 1996
Author(s)
Dietrich G. Leibfried, D M. Meekhof, B E. King, C Monroe, Wayne M. Itano, David J. Wineland
… the density matrices and Wigner functions for various quantum states of motion of a harmonically bound 9Be+ ion. We … Experimental Determination of the Motional Quantum State of a Trapped Atom …

GRANAD - Simulating GRAphene nanoflakes with ADatoms

August 26, 2025
Author(s)
David Dams, Miriam Kosik, Marvin Muller, Abhishek Ghosh, Antton Babaze, Julia Szczuczko, Garnett Bryant, Andres Ayuela, Carsten Rockstuhl, Marta Pelc, Karolina Slowik
… and relies on the JAX library for high-performance array computing, just-in-time compilation, and differentiability. …

Smart Phone Tool Test Assertions and Test Plan

April 23, 2010
Author(s)
Richard Ayers
This paper defines assertions and test cases for mobile device applications capable of acquiring data from mobile devices operating over a Global System for Mobile communication (GSM) and Code Division Multiple Access (CDMA) networks, used to determine
Displaying 1751 - 1775 of 9850
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