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 401 - 425 of 9847

Designing Quantum Dots and Quantum-Dot Solids

October 1, 2001
Author(s)
Garnett W. Bryant, W Jaskolski
… spectra are obtained for CdS/HgS/CdS and ZnS/CdS/ZnS quantum-dot quantum-well barrier/well/barrier nanocrystals. Comparison … electronic structure, nanocrystal, optical absorption, quantum dot, semiconductor … Designing Quantum Dots and Quantum-Dot Solids …

QKD on a Board Limited by Detector Rates in a Free-Space Environment

August 25, 2013
Author(s)
Alan Mink, Joshua Bienfang
… We discuss a high-speed quantum key distribution (QKD) system with the protocol … quantum communication, QKD, programmable instrumentation, … The Seventh International Conference on Quantum, Nano and Micro Technologies …

Observation of Photons Emitted During Inhibited Spontaneous Emission

June 1, 2003
Author(s)
D A. Branning, P G. Kwiat, Alan L. Migdall
… Proceedings of the International Conference on Quantum Communication, Measurement and Computing … International Conference on Quantum Communication, Measurement and Computing | 6th | | Rinton Press …

Standards Electronic Automatic Computer (SEAC)

November 1, 2004
Author(s)
Russell A. Kirsch
… The Standards Electronic Automatic Computer (SEAC) was the first programmable computer in the United States. The development of SEAC was a … between the National Bureau of Standards (NBS) team of computer engineers and world-class mathematicians. SEAC came … programmable computer, SEAC, Standards Electronic Automatic Computer …

Formation of Quantum-Dot Quantum-Well Heteronanostructures with Large Lattice Mismatch: ZnS/CdS/ZnS

January 1, 2001
Author(s)
R B. Little, M El-Sayed, Garnett W. Bryant, S Burke
… high quality II-VI superlattice structures can be made in quantum dots, despite the large bulk lattice-mismatch. Two … on them to produce high quality ZnS/CdS core/shell quantum dot quantum well heteronanostructures with extremely curved … absorbance, CdS, heteronanostructures, nanocrystals, quantum dot, quantum well, ZnS …

Implementation of generalized quantum measurements for unambiguous discrimination of multiple nonorthogonal coherent states

June 18, 2013
Author(s)
Francisco E. Becerra Chavez, Jingyun Fan, Alan L. Migdall
… Generalized quantum measurements can perform perfect discrimination of … outcomes. We demonstrate the realization of generalized quantum measurements for unambiguous discrimination of four nonorthogonal coherent states and obtain its quantum mechanical description, its positive-operator valued …

Preface to Proceedings of the International Conference Quantum Theory: Reconsideration of Foundations-6 (QTRF6) held in Vaxjo, Sweden, 11-14 June 2012

December 18, 2012
Author(s)
Harald Atmanspacher, Andrei Khrennikov, Alan L. Migdall, Sergey Polyakov
… of topics was presented in talks at this conference: quantum foundations (especially, Heisenberg's uncertainty … and information, mathematical formalism of quantum theory, philosophy, methodology of measurements and … of new exciting experiments on testing foundations of quantum mechanics and quantum field theory. A number of talks …

Towards Efficient Offloading in Fog/Edge Computing by Approximating Effect of Externalities

July 9, 2018
Author(s)
Vladimir V. Marbukh
… Fog/Edge computing is an emerging architecture, which extends the Cloud computing paradigm to the edge of the network, enabling new … by the aggregate utility. Optimization of the system computing and communication resources requires accounting for … Fog/Edge computing, offloading, utility, resource management, …

Freezing of a Disorder Induced Spin Liquid with Strong Quantum Fluctuations

June 29, 2021
Author(s)
Xiao Hu, Daniel M. Pajerowski, Depei Zhang, Andrey Podlesnyak, Yiming Qiu, Qing Huang, Haidong Zhou, Israel Klich, Alexander I. Kolesnikov, M. B. Stone, Seung-Hun Lee
… that this system transits from a gapless disorder-induced quantum spin liquid to a new quantum state below T f = 1.7(1) K, exhibiting a weak frozen … for such a weak freezing in this highly fluctuating quantum regime. … quantum spin liquid, quantum spin jam, neutron scattering …

Hybrid quantum systems with trapped charged particles

February 21, 2017
Author(s)
Shlomi S. Kotler, Raymond Simmonds, Dietrich Leibfried, David J. Wineland
… Trapped charged particles have been at the forefront of quantum information processing (QIP) for a few decades now, … fidelity. In a hybrid system involving trapped charges, quantum degrees of freedom of macroscopic objects such as … of the charges. The hybrid system therefore implements a "quantum transducer," where the quantum reality (i.e., …

Microwave-based arbitrary cphase gates for transmon qubits

January 17, 2020
Author(s)
George S. Barron, Fernando A. Calderon-Vargas, Junling Long, David P. Pappas, Sophia E. Economou
… Superconducting transmon qubits are of great interest for quantum computing and quantum simulation. A key component of quantum chemistry … superconducting transmon qubits, quantum computing, quantum simulation, nonmaximally entangling, …

Quantum Blackbody Thermometry

April 22, 2021
Author(s)
Eric B. Norrgard, Stephen Eckel, Christopher L. Holloway, Eric L. Shirley
… blackbody radiation using ensembles of polarizable quantum systems, such as Rydberg atoms and diatomic molecules. Quantum measurements with these exquisite electric field … on blackbody standards. The successful merger of quantum and blackbody-based measurements provides a new, …

Entanglement-based quantum communication secured by nonlocal dispersion cancellation

December 22, 2014
Author(s)
Catherine Lee, Zheshen Zhang, Greg Steinbrecher, Hongchao Zhou, Jacob Mower, Tian Zhong, Ligong Wang, Rob Horansky, Varun Verma, Richard Mirin, Francesco Marsili, Matthew Shaw, Sae Woo Nam, Gregory Wornell, Franco N. Wong, Jeffrey Shapiro, Dirk Englund
… The principles of quantum mechanics enable new applications that address … in communications, computation, and precision measurement. Quantum key distribution (QKD) enables participants to … quantum key distribution, single photon detectors, SNSPD, … Entanglement-based quantum communication secured by nonlocal dispersion …

Quantum-enhanced interferometry with large heralded photon-number states

June 14, 2020
Author(s)
G Thekkadath, M.E. Mycroft, B.A. Bell, C.G. Wade, A. Eckstein, David Phillips, R.B Patel, A. Buraczewski, Adriana Lita, Thomas Gerrits, Sae Woo Nam, M. Stobinska, A.I. Lvovsky, Ian Walmsley
… Quantum phenomena such as entanglement can improve … detectors to perform interferometry with novel heralded quantum probes of sizes up to N = 8 (i.e. measuring up to … photon-number states into an interferometer, and provide quantum-enhanced phase sensitivity even in the presence of …

Quantum amplification of boson-mediated interactions

May 13, 2021
Author(s)
Shaun C. Burd, Raghavendra Srinivas, Hannah M. Knaack, Wenchao Ge, Andrew C. Wilson, David J. Wineland, Dietrich Leibfried, John J. Bollinger, David T. Allcock, Daniel Slichter
… Strong and precisely controlled interactions between quantum objects are essential for quantum information processing\citeSackett2000,Majer2007}, … and for the formation of exotic quantum matter\citeBloch2008}. A well-established paradigm … Squeezing, trapped ion, quantum information processing, entanglement …

Early observations of macroscopic quantum jumps in single atoms

March 25, 2015
Author(s)
Wayne M. Itano, James C. Bergquist, David J. Wineland
… atomic ion, a phenomenon better known as 'macroscopic quantum jumps,' was an important early scientific application … called 'electron shelving.' The existence of the quantum jumps was viewed with skepticism by some in the quantum optics community, perhaps due to the failure of some …

Tunable spin-spin interactions and entanglement of ions in separate controlled potential wells

August 7, 2014
Author(s)
Andrew C. Wilson, Yves Colombe, K. R. Brown, Emanuel H. Knill, Dietrich G. Leibfried, David J. Wineland
… 2 Seth Lloyd 3 and others, researchers in the field of quantum information processing and simulation seek to harness the quantum-mechanical properties of well-controlled laboratory … a formidable challenge. 6 For largescale universal quantum computing the technical demands are even greater. As one …

Semantic Preserving Bijective Mappings of Mathematical Formulae between Word Processors and Computer Algebra Systems

June 28, 2017
Author(s)
Howard S. Cohl, Bonita V. Saunders, Marjorie A. McClain, Moritz Schubotz, Joon Bang, Juergen Gerhardt, Andre Greiner Petter
… LaTeX) is achieved by using a semantic macro set. Computer algebra systems (CAS) such as Maple and Mathematica … LaTeX, Computer Algebra Systems, Representation Translation … Conference on Intelligent Computer Mathematics 2017 … of Mathematical Formulae between Word Processors and Computer Algebra Systems …

Quantum correlations in a noisy neutron interferometer

September 15, 2014
Author(s)
Michael G. Huber, Muhammad D. Arif, Christopher Wood, D G. Cory, M. O. Abutaleb, Dimitry A. Pushin
… We investigate quantum coherences in the presence of noise by entangling the … of the output state reduces to zero, however the quantum discord remains non-zero for all noise values. Hence … a neutron interferometer still exhibits uniquely quantum behaviour. … neutron interferometry, quantum coherence …

Simultaneous Spin-Charge Relaxation in Double Quantum Dots

May 8, 2013
Author(s)
Vanita Srinivasa, Katja C. Nowack, Mohammad Shafiei, Lieven M. Vandersypen, Jacob M. Taylor
… for a single electron confined within a double quantum dot. A simple toy model incorporating both direct … spin relaxation, charge relaxation, phonons, double quantum dots, spin-orbit interaction, hyperfine interaction, GaAs spin hot spots, quantum computing, quantum information …

Fully Quantum Cross Second Virial Coefficients for the Three-Dimensional He-H2 Pair

September 21, 2014
Author(s)
Giovanni Garberoglio, Konrad Patkowski, Allan H. Harvey
… for both the flexibility of the hydrogen molecule and for quantum effects. The effect of flexibility (while larger than … is relatively small, but a complete accounting for the quantum effects is essential for correct results at … helium, hydrogen, quantum effects, thermodynamics, virial coefficients …

Measuring out-of-time-order correlations and multiple quantum spectra in a trapped-ion quantum magnet

May 22, 2017
Author(s)
Martin Garttner, Justin G. Bohnet, Arghavan Safavi-Naini, Michael L. Wall, John Bollinger, Ana Maria Rey
… feasible protocols for quantifying the buildup of quantum correlations and coherence are needed, as performing … correlation functions (OTOCs) in a long-range Ising spin quantum simulator with more then 100 ions in a Penning trap. … about the state of the system encoded in the multiple quantum coherence spectrum, extract the quantum state purity, …
Displaying 401 - 425 of 9847
Was this page helpful?