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

NIST Authors in Bold

Displaying 1276 - 1300 of 3643

Threshold Dynamics of a Semiconductor Single Atom Maser

August 31, 2017
Author(s)
Michael Gullans, Jacob M. Taylor, Yinyiu Liu, J. Stehlik, Christopher Eichler, X Mi, T Hartke, Jason Petta
… a single-atom maser consisting of a semiconductor double quantum dot (DQD) that is embedded in a high quality factor … maser, quantum dot, circuit QED …

Decoherence in Josephson Qubits from Dielectric Loss

November 16, 2005
Author(s)
John M. Martinis, Ken B. Cooper, Robert Mcdermott, Matthias Steffen, Markus Ansmann, Kevin Osborn, Katarina Cicak, Seongshik Oh, David P. Pappas, Raymond Simmonds, Clare Yu
… to be a dominant decoherence source in superconducting quantum bits. Depending on the qubit design, dielectric loss … Josephson junctions, quantum computing, superconductors …

Design, modeling, and fabrication of high frequency Oersted lines for electron spin manipulation in silicon based quantum devices

October 25, 2024
Author(s)
Pradeep Namboodiri, Mark-yves Gaunin, Alessandro Restelli, Ranjit Kashid, Xiqiao Wang, Fan Fei, Brian Courts, FNU Utsav, Vijith Kamalon Pulikodan, Jonathan Wyrick, Richard M. Silver
… spins is one of the central problems of silicon-based quantum computing efforts. Electron spin resonance (ESR) … electromagnetic field that drives Rabi oscillations in a quantum dot interface. The frequency of these Rabi … lines for electron spin manipulation in silicon based quantum devices …

Diagnosis of Pulsed Squeezing in Multiple Temporal Modes

August 26, 2008
Author(s)
Scott C. Glancy, Emanuel H. Knill, Thomas Gerrits, Tracy S. Clement, Martin J. Stevens, Sae Woo Nam, Richard P. Mirin
… mode. These problems limit the fidelity of quantum information processing tasks with pulsed squeezed … Schrodinger cat state, quantum state tomography, quantum state estimation, Gaussian state, squeezed state …

Spin-Orbit Coupled Bose-Einstein Condensates

April 15, 2016
Author(s)
Yu-Ju Lin, Karina K. Jimenez Garcia, Ian B. Spielman
… Spin-orbit (SO) coupling -- the interaction between a quantum particle's spin and its momentum -- is ubiquitous in … and is important for spintronic devices. Ultracold atoms, quantum many-body systems under nearly precise experimental … dressed atomic spin states are modified, and we observe a quantum phase transition from a spatially spin-mixed state …

Migdall Responds II: More Correlated Photon Metrology History

November 1, 1999
Author(s)
Alan L. Migdall
… pairs of particles(photons) to determine absolute detector quantum efficiencies. Unfortunately there is an overall … screen. The claim is made that this allows the quantum efficiency of the human observers to be determined. … is the basis of the **free lunch** method allowing the quantum efficiency of single particle (photon) detector to be …

Topological Insulators and Metals in Atomic Optical Lattices

May 28, 2009
Author(s)
Tudor Stanescu, Victor Galitski, Jay Vaishnav, Charles W. Clark, Sankar Das Sarma
… We propose the realization of topological quantum states with cold atoms trapped in an optical lattice. … their condensed matter counterparts, cold atom topological quantum states can be i) seen , by mapping out the … graphene, optical lattices, quantum spin Hall effect, spin-orbit interaction, topological …

Measurements of diffusion coefficients for rubidium--inert gas mixtures using coherent scattering from optically pumped population gratings

March 12, 2025
Author(s)
Alex Pouliot, E. Chomen-Ramos, G. Carlse, T. Vacheresse, J. Randhawa, L. Marmet, A. Kumarakrishnan, Jacek Klos, Eite Tiesinga
… this data with diffusion coefficients obtained using \em quantum}, \em classical}, and \em semi-classical} theoretical … room temperature, simulations of $D$ using classical and quantum methods agree within their intrinsic, sub-1\,\% … We also observe that the temperature dependence of the quantum and classical calculations of $D$ are nearly the same …

Adaptive Grid Refinement for a Model of Two Confined and Interacting Atoms

February 1, 2005
Author(s)
William F. Mitchell, Eite Tiesinga
… equation in order to study the feasibility of a quantum computer based on extremely-cold neutral alkali-metal … of an optical lattice of counter-propagating laser beams. Quantum gates are constructed by bringing two atoms together … adaptive grid refinement, elliptic eigenvalue problems, quantum computing, Schroediner's equation …

Reply to Comment on "Testing Three-body Quantum Electrodynamics with Trapped Ti20+ Ions: Evidence for a Z-Dependent Divergence between Experiment and Calculation"

April 12, 2013
Author(s)
Lawrence T. Hudson, C T. Chantler, M N. Kinnane, John D. Gillaspy, A.T. Payne, L F. Smale, Albert Henins, Joshua M. Pomeroy, J A. Kimpton, E Takacs, K Makonyi
… x-ray spectroscopy, quantum electrodynamics … Reply to Comment on "Testing Three-body Quantum Electrodynamics with Trapped Ti20+ Ions: Evidence for …

Probing the timescale of the exchange interaction in a ferromagnetic alloy

January 27, 2012
Author(s)
Justin M. Shaw, Stefan Mathias, Chan La-O-Vorakiat, Hans T. Nembach, Thomas J. Silva, Mark Siemens, Henry Kapteyn, Margaret Murnane
… with Cu. This measurement probes how the fundamental quantum mechanical exchange coupling between Fe and Ni in … ultra-fast, magnetism, quantum …

Reaction Mechanism of Chorismate Mutase Studied by the Combined Potentials of Quantum Mechanics and Molecular Mechanics

November 21, 2002
Author(s)
Y. S. Lee, S. E. Worthington, Morris Krauss, B R. Brooks
… environment while treating the reaction with ab initio quantum chemistry. In addition to the reactant, chorismate, … the side-chains of glu78 and arg90 are included in the quantum region to explore whether the strong ionic hydrogen … of Chorismate Mutase Studied by the Combined Potentials of Quantum Mechanics and Molecular Mechanics …

Individual Ion Addressing with Microwave Field Gradients

April 26, 2013
Author(s)
Ulrich J. Warring, C. Ospelkaus, Yves Colombe, Robert Jordens, Dietrich G. Leibfried, David J. Wineland
… addressing is a prerequisite for many instances of quantum information processing. We present this capability on … trap. We describe four approaches which may be used in quantum information experiments with hyperfine levels as … ion trapping, mechanical effects of light on ions, quantum computation architectures and implementations, Zeeman …

Entangling Light in its Spatial Degrees of Freedom with 4-Wave Mixing in an Atomic Vapor

February 18, 2009
Author(s)
Vincent Boyer, Alberto M. Marino, Raphael C. Pooser, Paul D. Lett
… in subtle correlations that exist in the unavoidable quantum fluctuations of the amplitudes and the phases of the … from noise-free imaging and improved position sensing to quantum information processing. … mixing, nonlinear optics, quadrature entanglement, quantum imaging, spatial entanglement, squeezed light …

Second Chern number of a quantum-simulated non-Abelian Yang monopole

June 29, 2018
Author(s)
Ian B. Spielman, Francisco Salces Carcoba, Yuchen Yue, Abigail Perry, Seiji Sugawa
… inspired by concepts from high-energy physics, we use quantum simulation based on the spin degrees of freedom of … Second Chern number of a quantum-simulated non-Abelian Yang monopole …

Using a High-Value Resistor in Single-Electron Counting Measurements

June 1, 2002
Author(s)
Randolph Elmquist, Neil M. Zimmerman, William Huber
… the aim of improving the experimental link between three quantum electrical standards. This technique is new in its … Josephson Effect, Quantum Hall effect, Resistance Measurements, Single-electron …

A significant-loophole-free test of Bell's theorem with entangled photons

December 16, 2015
Author(s)
Marissa Giustina, Marijn Versteegh, Soren Wengerowsky, Johannes Handsteiner, Armin Hochrainer, Kevin Phelan, Fabian Steinlechner, Johannes Koffler, Larsson Jan-Ake, Carlos Abellan, Waldimar Amaya, Valerio Pruneri, Morgan Mitchell, Joern Beyer, Thomas Gerrits, Adriana Lita, Krister Shalm, Sae Woo Nam, Thomas Scheidl, Rupert Ursin, Bernhard Wittmann, Anton Zeilinger
… this worldview is incompatible with the predictions of quantum mechanics, as is expressed in Bell's inequalities. … Previous experiments convincingly supported the quantum predictions. Yet, every experiment performed to date … free Bell test, local realism, fundamental tests of quantum mechanics, transition edge sensors …

EEEL Technical Accomplishments

March 30, 2009
Author(s)
Erik M. Secula
… and single-photon detectors that test the limits of quantum information. Our scientists and engineers are leading … optoelectronics, semiconductors, electromagnetics, quantum electrical …

Trapped-ion optical atomic clocks at the quantum limits

January 31, 2017
Author(s)
David R. Leibrandt, Samuel M. Brewer, Jwo-Sy Chen, Aaron M. Hankin, David B. Hume, David J. Wineland, Chin-Wen Chou
… of optical atomic clocks, with a focus on the Al+ quantum-logic clock developed at NIST. We discuss the current … Trapped-ion optical atomic clocks at the quantum limits …
Displaying 1276 - 1300 of 3643
Was this page helpful?