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 351 - 375 of 3643

High-efficiency superconducting detectors and their applications in quantum optics

September 21, 2017
Author(s)
Thomas Gerrits
… single-photon detection resides at the heart of many quantum information applications. Our efforts towards high … detectors, and their range of applications and impacts in quantum optics will be discussed. … quantum optics, single photon detectors, single photon source …

Sub-200 ps Quantum Network Node Synchronization over a 128 km Link White Rabbit Architecture

May 12, 2023
Author(s)
Wayne McKenzie, Ya-Shian Li-Baboud, Mark Morris, Gerald Baumgartner, Anouar Rahmouni, Paulina Kuo, Oliver T. Slattery, Bruce Crabill, Mheni Merzouki, Abdella Battou, Thomas Gerrits
… We show sub-200 ps synchronization between quantum networks nodes that are separated by two 64 km … system clocks and shows promise for metropolitan-scale quantum network node synchronization. … quantum node synchronization, white rabbit, quantum networks, metrology …

Relativistic Covariance and the Interpretation of Quantum Mechanics

January 1, 1996
Author(s)
Egon Marx
… The standard interpretation of quantum mechanics is revised to conform to the relativistic … principle. The measurement process is interpreted as the quantum mechanical interaction between the system and the … the nonrelativistic theory of many particles. Relativistic quantum mechanics (RQM) is of great interest because it can …

Accurate measurement of the loss rate of cold atoms due to background gas collisions for the quantum-based cold atom vacuum standard

August 1, 2023
Author(s)
Daniel Barker, James A. Fedchak, Jacek Klos, Julia Scherschligt, Abrar Sheikh, Eite Tiesinga, Stephen Eckel
… of less than one---between the measurements and recent quantum-scattering calculations of the loss rate coefficients … for all other studied systems provides validation that a quantum-based measurement of vacuum pressure using cold atoms … AVS Quantum Science … of cold atoms due to background gas collisions for the quantum-based cold atom vacuum standard …

Ultrafast photodetectors with near-unity quantum efficiency

January 1, 1999
Author(s)
G. Ulu, M. Gvkkavas, M. S. {Umlat}nl{umlat}, N. Biyikli, E. {Omlat}zbay, Richard Mirin, David H. Christensen
… cavity enhanced (RCE) photodetectors with near-unit quantum efficiency. The peak wavelength is in the 780-830 nm … from conventional measurements of low light levels and quantum optical experiments that use pulsed sources to … near-unity, photodetector, quantum efficiency, resonant cavity-enhancement …

Low timing jitter detector for gigahertz quantum key distribution

February 1, 2007
Author(s)
Robert J. Collins, Robert Hadfield, Veronica Fernandez, Sae Woo Nam, Gerald S. Buller
… nitride nanowire is demonstrated in an optical-fibre-based quantum key distribution test bed operating at a clock rate … the detector leads to significant reduction in estimated quantum bit error rate and a resultant improvement in secrecy … quantum key distribution, single-photon detector …

Quantum Critical Singularities in Two-Dimensional Metallic XY Ferromagnets

February 20, 2018
Author(s)
Chandra M. Varma, W. J. Gannon, M. C. Aronson, Jose Rodriguez Rivera, Yiming Qiu
… An important problem in contemporary physics concerns quantum-critical fluctuations in metals. A scaling function … of the correlation function near a 2D-ferromagnetic quantum-critical point (QCP) is constructed, and its … of the correlation functions of the dissipative quantum XY model (DQXY). The calculations are motivated by …

Arrays of individually controlled ions suitable for two-dimensional quantum simulations

June 13, 2016
Author(s)
Manuel Mielenz, Henning Kalis, Matthias Wittemer, Frederick Hakelberg, Roman Blain, Peter Maunz, Dietrich Leibfried, Tobias Schaetz
… A custom-built and precisely controlled quantum system may o ffer access to a fundamental … another, less accessible system of interest. A universal quantum computer is currently out of reach, but an analog quantum simulator (AQS) that makes the relevant observables, …

Predicted Signature of the Quantum Statistical Nature of Vortices in Bose-Einstein Condensates

October 16, 2008
Author(s)
Z Dutton, L V. Hau
… 10-13. In one and two-dimensional systems, identical quantum particles can obey anyon statistics which are in … bosons and fermions u14-16. We report on development of a quantum field theory for a many-body interacting system of … atomic BEC in a rotating potential, we calculate the quantum ground state and low-lying excited states for a …

Electron-Phonon Scattering in Quantum Wires Exposed to a Perpendicular Magnetic Field

October 12, 2021
Author(s)
M Aghasyan, S M. Badalyan, Garnett W. Bryant
… of test electron and electron temperature relaxation in quantum wires due to acoustical and optical phonon scattering … electron subband wave functions, the scattering rates in quantum wires under different environments are calculated. In … electron-phonon scattering, quantum wires …

Symmetry breaking and error correction in open quantum systems

December 8, 2020
Author(s)
Simon K. Lieu, Ron Belyansky, Jeremy T. Young, Rex Lundgren, Victor Albert, Alexey Gorshkov
… transitions are a well-understood phenomenon of closed quantum systems in quantum optics, condensed matter, and high energy physics. … open quantum systems, non-equilibrium phase transitions, quantum error correction … Symmetry breaking and error correction in open quantum systems …

Field-induced Quantum Fluctuations in the Heavy Fermion Superconductor CeCu 2 Ge 2

October 13, 2011
Author(s)
Deepak Singh, A. Thamizhavel, Jeffrey W. Lynn, S. K. Dhar, Jose A. Rodriguez, Tobias K Herman
… Quantum-mechanical fluctuations in strongly correlated … Here we report the discovery of a field-tuned quantum critical phenomenon in stoichiometric CeCu 2 Ge 2 , a … 10 GPa of applied pressure. Our finding of the associated quantum critical spin fluctuations of the antiferromagnetic …

Light-induced fractional quantum hall phases in graphene

December 15, 2017
Author(s)
Michael Gullans, Areg Ghazaryan, Pouyan Ghaemi, Mohammad Hafezi
… We show how to realize two-component fractional quantum Hall phases in monolayer graphene by optically … as well as the control of phase transitions, in graphene quantum Hall systems using optical elds and integrated … graphene, quantum hall, anyons … Light-induced fractional quantum hall phases in graphene …

Experimental test of an event-based corpuscular model modification as an alternative to quantum mechanics

February 13, 2013
Author(s)
Giorgio Brida, Ivo P. Degiovanni, Marco Genovese, Alan L. Migdall, Fabrizio Piacentini, Sergey Polyakov, Paola Traina
… (EBCM)9) of the interaction of photons with matter and quantum mechanics. The test looks at the interference that … source,12) agree with the predictions of standard quantum mechanics and falsify the EBCM … quantum mechanics, single photon, hidden variable, fundamental test, quantum information, realism, non locality …

Electronic Enhancement of the Exciton Coherence Time in Charged Quantum Dots

October 19, 2015
Author(s)
Galan A. Moody, Corey A. McDonald, Ari D. Feldman, Todd E. Harvey, Richard P. Mirin, Kevin L. Silverman
… Minimizing decoherence due to coupling of a quantum system to its fluctuating environment is at the forefront of quantum information and photonics research. Nature sets the … coherence time of the charged exciton transition in quantum dots embedded in a photonic waveguide. By …

Low Noise Amplification of a Continuous Variable Quantum State

June 29, 2009
Author(s)
Raphael C. Pooser, Alberto M. Marino, Vincent Boyer, Kevin M. Jones, Paul D. Lett
… mixing interaction in hot Rb vapor. Performance near the quantum limit for a range of amplifier gains, including near … Such low-noise amplifiers are essential for so called quantum cloning machines and are useful in quantum information protocols. We demonstrate that …

A Quantum Model of Thermodynamic Mechanical Oscillators

June 2, 2016
Author(s)
Jacob M. Taylor, Chiao-Hsuan Wang
… We present a quantum mechanical model of a bath of spins coupled to the … investigation of non-equilibrium resonator states in the quantum domain. We find our model emerges naturally in … Quantum spring, mechanical resonator, two level fluctuations, … A Quantum Model of Thermodynamic Mechanical Oscillators …

Probing Quantum Nanostructures with Near-Field Optical Microscopy and [Vice Versa]

February 1, 1998
Author(s)
Garnett W. Bryant
… how near-field optical microscopy can be used to probe quantum nanostructures. Calculations are done for a quantum dot. Results for different tip/dot configurations and … nanostructure, optical spectroscopy, quantum dot … Probing Quantum Nanostructures with Near-Field Optical Microscopy and …

Continuum of magnetic excitations in the Kitaev honeycomb iridate D3LiIr2O6

March 29, 2025
Author(s)
Thomas Halloran, Yishu Wang, Kemp Plumb, M. B. Stone, Barry Winn, M. K. Graves-Brook, Jose Rodriguez Rivera, Yiming Qiu, Prashant Chauhan, Johannes Knolle, Roderich Moessner, N. Armitage, Tomohiro Takayama, Hidenori Takagi, Collin L. Broholm
… likely plays an important role in stabilizing the low T quantum fluctuating state1,2. … npj Quantum Materials … Magnetism, Neutron Scattering, Quantum spin liquid, Kitaev spin liquid, Iridates …

Clock synchronization characterization of the Washington DC metropolitan quantum network (DC-QNet)

October 16, 2024
Author(s)
Wayne McKenzie, Anne Marie Richards, Shirali Patel, Thomas Gerrits, T. G., Steven Peil, Adam Black, David Tulchinsky, Alexander Hastings, YaShian Li-Baboud, Anouar Rahmouni, Paulina Kuo, Alan Mink, Ivan Burenkov, Yicheng Shi, Matthew Diaz, Nijil Lal Cheriya Koyyottummal, Mheni Merzouki, Pranish Shrestha, Alejandro Rodriguez Perez, Eleanya Onuma, Daniel Jones, Atiyya Davis, Thomas A. Searles, J.D. Whalen, Kate Collins, Qudsia Quraishi, La Vida Cooper, Harry Shaw, Bruce Crabill, Oliver Slattery, Abdella Battou
… Quantum networking protocols relying on interference and … two optical time transfer methods in a metropolitan-scale quantum networking research testbed. With active electronic … for enabling experimental research in developing practical quantum networking protocols. …

The Spin Hall Effect in a Quantum Gas

June 13, 2013
Author(s)
Matthew C. Beeler, Ross A. Williams, Karina K. Jimenez Garcia, Lindsay J. LeBlanc, Abigail R. Perry, Ian B. Spielman
… angular momentum, an internal degree of freedom present in quantum particles that can usually be either “up” or “down”. … dielectric junctions [7]; and now for the first time in quantum gases moving through an optical field. By engineering … a spatially inhomogenous spin-orbit coupling field for our quantum gas, we explicitly introduce and measure the req- …

Polarization dependent photoluminescence of elliptical quantum dots defined by lithographic patterning

June 15, 2011
Author(s)
Varun B. Verma, Martin J. Stevens, Kevin L. Silverman, Neville Dias, Akash Garg, James J. Coleman, Richard P. Mirin
… of elliptically shaped lithographically patterned quantum dots fabricated using a wet etching and regrowth … that the dipole moment of the ground state of elliptical quantum dots is predominantly aligned with the major axis of … quantum dot, polarization, single photon …
Displaying 351 - 375 of 3643
Was this page helpful?