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NIST Authors in Bold

Displaying 1001 - 1025 of 3643

High-fidelity laser-free universal control of trapped ion qubits

September 8, 2021
Author(s)
Raghavendra Srinivas, Emanuel Knill, Robert Sutherland, Alexander T. Kwiatkowski, Hannah M. Knaack, Scott Glancy, David J. Wineland, Shaun C. Burd, Dietrich Leibfried, Andrew C. Wilson, David T. Allcock, Daniel Slichter
… individual qubit operations—is a fundamental resource for quantum computing, simulation and networking. Qubits realized … on multiple pairs of ions in a large-scale trapped-ion quantum processor without increasing control signal power or … scalable, high-fidelity, fully chip-integrated trapped-ion quantum computing. …

Quantum Electrodynamics in the Dark

August 1, 2001
Author(s)
John D. Gillaspy
… recombination, highly charged ions, ion traps, QED, quantum electrodynamics, strong electric fields … Quantum Electrodynamics in the Dark …

Pauli Blocking of Collisions in a Quantum Degenerate Atomic Fermi Gas

June 1, 2001
Author(s)
B. L. DeMarco, S Papp, D S. Jin
… We have produced an interacting quantum degenerate Fermi gas of atoms composed of two … reduction in the effective collision cross section in the quantum degenerate regime. … Pauli Blocking of Collisions in a Quantum Degenerate Atomic Fermi Gas …

Quantum Mechanics of the Electromagnetic Environment in the Single-Junction Coulomb Blockade

January 1, 1992
Author(s)
K Flensberg, S Girvin, M Jonson, David R. Penn, Mark D. Stiles
… across the junction. We treat these displaced oscillators quantum mechanically, predicting behavior that is very … with three recent experiments demonstrates that the quantum mechanical treatment of this model correctly … Quantum Mechanics of the Electromagnetic Environment in the …

Measurable Improvement in Multi-Qubit Readout Using a Kinetic Inductance Traveling Wave Parametric Amplifier

August 1, 2025
Author(s)
Manuel Beltran, Logan Howe, Andrea Giachero, Michael Vissers, Danilo Labranca, Joel Ullom, Peter Hopkins
… Superconducting quantum computing benefits significantly from readout chains operating very near the Quantum Limit (QL) of added noise. This is typically achieved … a 20nm thick NbTiN film have been operated near to the quantum limit, however, these devices require a pump tone …

Realization of Quantum Error Correction

December 1, 2004
Author(s)
J. Chiaverini, D. Leibfried, T Schaetz, M D. Barrett, R. B. Blakestad, J. Britton, W M. Itano, J. D. Jost, Emanuel Knill, C. Langer, R Ozeri, David J. Wineland
… form and so do not change the concurrence. Hence for a quantum computation v=k1 a k2, analysis of a in e A allows … in terms of a time-reversal symmetry operator, namely the quantum bit flip |?> ? (-i sy) (x)n | ?*> . In this context, … Realization of Quantum Error Correction …

Sympathetic Cooling of Trapped Ions for Quantum Logic

January 1, 2000
Author(s)
D Kielpinski, B E. King, C J. Myatt, C A. Sackett, Q A. Turchette, Wayne M. Itano, C Monroe, David J. Wineland
… One limit to the fidelity of quantum logic operations on trapped ions arises from heating … Sympathetic Cooling of Trapped Ions for Quantum Logic …

Background and Review of Cavity-Enhanced Spontaneous Parametric Down-Conversion

August 22, 2019
Author(s)
Oliver T. Slattery, Lijun Ma, Kevin Zong, Xiao Tang
… of entangled and correlated single-photon pairs used for quantum communications applications for nearly three decades. … energy transitions in atomic ensembles for implementing quantum memories, which are needed for quantum repeaters to extend the reach of quantum …

Physics Laboratory: Activities, Accomplishments & Recognition 2008-2009

March 1, 2010
Author(s)
Jonathan E. Hardis
… ionizing radiation, time and frequency, and fundamental quantum processes. Areas of core competence include … radiation measurements, time and frequency metrology, quantum physics, fundamental constants, and electronic … ionizing radiation, nanotechnology, optical radiation, quantum information, quantum physics, time …

Unraveling spin entanglement using quantum gates with scanning tunneling microscopy-driven electron spin resonance

October 31, 2025
Author(s)
Eric Switzer, Jose Reina Galvez, Geza Giedke, Talat Rahman, Christoph Wolf, Deung-Jang Choi, Nicolas Lorente
… Quantum entanglement is a fundamental resource for quantum information processing, and its controlled generation and detection remain key challenges in scalable quantum architectures. Here, we demonstrate the deterministic … Unraveling spin entanglement using quantum gates with scanning tunneling microscopy-driven …

Long-Lived Qubit Memory Using Atomic Ions

August 5, 2005
Author(s)
C. Langer, R Ozeri, John D. Jost, J Chiaverini, B. L. DeMarco, A. Ben-Kish, Brad R. Blakestad, Joseph W. Britton, David Hume, Wayne M. Itano, Dietrich G. Leibfried, Rainer Reichle, Till P. Rosenband, Tobias Schaetz, Piet Schmidt, David J. Wineland
… We demonstrate experimentally a robust quantum memory using a magnetic-field-independent hyperfine … cooling, decoherence-fre subspace, long coherence time, quantum computation, quantum information processing, quantum memory, quantum …

Dynamical quantum correlations of Ising models on an arbitrary lattice and their resilience to decoherence

November 7, 2013
Author(s)
Michael S. Foss-Feig, Kaden R. Hazzard, John J. Bollinger, Ana Maria Rey, Charles W. Clark
… a central role in generating entangled states for use in quantum metrology and quantum information. In particular, ultracold atomic gases, … give rise to highly non-classical dynamics and long-range quantum correlations. In the first part of this paper, we … Dynamical quantum correlations of Ising models on an arbitrary lattice …

Tunable Delay of Einstein-Podolsky-Rosen Entanglement

February 18, 2009
Author(s)
Alberto M. Marino, Raphael C. Pooser, Vincent Boyer, Paul D. Lett
… Entanglement is an important quantum resource which displays correlations between two … makes it the basis for a number of applications, such as quantum information processing, quantum computing, and quantum communications. The ability to … mixing, nonlinear optics, quadrature entanglement, quantum imaging, spatial entanglement, squeezed light …

Ultra-low-noise all-fiber photon pair source

August 21, 2008
Author(s)
Shellee D. Dyer, Martin J. Stevens, Burm Baek, Sae Woo Nam
… nonlinear optics, parametric processes, quantum optics … Ninth International Conference on Quantum Communication, Measurement and Computing (QCMC) …

Efficient quantum dot single photon extraction into an optical fiber using a nanophotonic directional coupler

September 19, 2011
Author(s)
Marcelo I. Davanco, Matthew T. Rakher, W. Wegscheider, Dieter Schuh, Antonio Badolato, Kartik A. Srinivasan
… for collecting photoluminescence from a single InAs quantum dot directly into a standard single mode optical … with a suspended GaAs nanophotonic waveguide with embedded quantum dots, forming an efficient and broadband directional … a single mode optical fiber was estimated for a single quantum dot transition. …

Fundamental limits and optimal estimation of the resonance frequency of a linear harmonic oscillator

September 15, 2021
Author(s)
Mingkang Wang, Rui Zhang, Robert Ilic, Yuxiang Liu, Vladimir Aksyuk
… mechanical cantilevers, are subject to thermodynamic and quantum perturbations and detection uncertainty, … continuously measured position. The lower bound combines quantum and thermodynamic fundamental limits with those … frequency measurement from thermodynamically- and quantum-backaction-driven fluctuations alone, without …

Precise Energies of Highly Excited Hydrogen and Deuterium

November 1, 2002
Author(s)
Svetlana A. Kotochigova, Peter J. Mohr, Barry N. Taylor
… transitions between highly excited states with principal quantum number n up to 200. All known quantum electrodynamics and relativistic corrections have … deuterium, energy levels hydrogen, quantum electrodynamics …

Nonequilibrium dynamics of arbitrary-range Ising models with decoherence: An exact analytic solution

April 3, 2013
Author(s)
John J. Bollinger, Michael Foss-Feig, Kaden R. Hazzard, Ana Maria Rey
… in many-body systems is of fundamental importance in quantum physics: Decoherence can degrade correlations, but … These calculations will find applications in ongoing quantum information and emulation efforts using a variety of … decoherence, Ising models, non-equilibrium dynamics, quantum emulation, quantum information, spontaneous emission, …

A Modified Approach to de Broglie Wave Mechanics in Applied Electromagnetic Fields

October 21, 2003
Author(s)
James R. Baker-Jarvis, Pavel Kabos
… of the self-interaction wave. We also develop a novel quantum-mechanical, relativistic energy-momentum conservation equation using a complex quantum-mechanical, four vector. The analog to … electromagnetic energy conservation is used to understand quantum interactions. …

Entangled Mechanical Oscillators

June 4, 2009
Author(s)
John D. Jost, Jonathan Home, Jason Amini, David Hanneke, R. Ozeri, Christopher Langer, John J. Bollinger, Dietrich G. Leibfried, David J. Wineland
… Quantum mechanics describes the state and evolution of … with a separated mechanical oscillator. These results show quantum entanglement in a degree of freedom that pervades the … these experiments is an important ingredient to scale up quantum information processing based on trapped atomic ions. …

Nonlinear Sideband Cooling to a Cat State of Motion

May 25, 2023
Author(s)
Bradley Hauer, Joshua Combes, John Teufel
… to prepare a macroscopic mechanical resonator into a quantum superposition state is an outstanding goal of cavity … Optomechanics, nanomechanics, quantum optics, quantum sensing, quantum computing …
Displaying 1001 - 1025 of 3643
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