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NIST Authors in Bold

Displaying 2351 - 2375 of 3644

Clock-line-mediated Sisyphus Cooling

July 31, 2024
Author(s)
Jacob Siegel, Benjamin Hunt, Tanner Grogan, Youssef Hassan, Kyle Beloy, Roger Brown, Andrew Ludlow, Chun-Chia Chen, Kurt Gibble
… shifts, while retaining large atom numbers to reduce the quantum projection noise. This Sisyphus cooling can be pulsed or continuous, and is applicable to a range of quantum metrology applications. …

Breakdown of Sound in Superfluid Helium

February 19, 2024
Author(s)
Marc Nichitiu, Craig Brown, Igor Zaliznyak
… proposed that such processes exist in superfluid helium, a quantum fluid where the very concept of quasiparticles was … decays and their importance for understanding quantum matter. …

Resolution of the paradox of the diamagnetic force on the Kibble coil

January 13, 2021
Author(s)
Stephan Schlamminger, Shisong Li, Rafael Marangoni, Darine El Haddad, Qing Wang, Wei Zhao
… establishes a very precise and absolute link between quantum electrical standards and macroscopic mass or force … constants ($h$, $N_A $, $e$) and realizing a quasi-quantum mass in the 2019 newly revised International System …

Modeling near ground-state cooling of two-dimensional ion crystals in a Penning trap using electromagnetically induced transparency

February 7, 2019
Author(s)
Athreya Shankar, Elena Jordan, Kevin Gilmore, Arghavan Safavi-Naini, John J. Bollinger, Murray Holland
… planar crystals of tens to hundreds of ions, are versatile quantum simulators. Thermal occupations of the motional … to the plane of the ion crystal, degrade the quality of quantum simulations. Laser cooling using electromagnetically …

Ultra-stable optical clock with two cold-atom ensembles

January 1, 2017
Author(s)
Marco Schioppo, Roger Brown, Will McGrew, Nathan M. Hinkley, Robert J. Fasano, Kyle Beloy, Gianmaria Milani, Daniele Nicolodi, Jeffrey Sherman, Nate B. Phillips, Christopher W. Oates, Andrew Ludlow
… of atomic interrogation with ‘dead' time required for quantum state preparation and readout. This non-continuous … schemes to extend laser coherence and reduce the standard quantum limit of clock stability, achieving a spectroscopy …

Performance Improvements for the NIST 1 V Josephson arbitrary waveform synthesizer

November 10, 2014
Author(s)
Samuel P. Benz, Steven B. Waltman, Anna E. Fox, Paul D. Dresselhaus, Alain Rufenacht, Logan A. Howe, Robert E. Schwall, Nathan E. Flowers-Jacobs
… 0.4 mA by operating every Josephson junction in its second quantum state. The newest circuit synthesizes 1 V waveforms with the junctions operating in the first quantum state. The voltage per array is doubled because the …

Third-order antibunching from an imperfect single-photon source

February 4, 2014
Author(s)
Martin J. Stevens, Scott C. Glancy, Sae Woo Nam, Richard P. Mirin
… of an optically excited single-photon source: an InGaAs quantum dot in a microcavity pedestal. Increasing the optical … Spectrally resolved cross-correlation measurements between quantum-dot and cavity modes show that photons from these two …

Third-order antibunching from an imperfect single-photon source

February 4, 2014
Author(s)
Martin J. Stevens, Scott C. Glancy, Sae Woo Nam, Richard P. Mirin
… of an optically excited single-photon source: an InGaAs quantum dot in a microcavity pedestal. Increasing the optical … Spectrally resolved cross-correlation measurements between quantum-dot and cavity modes show that photons from these two …

A Microelectromechanically Controlled Cavity Optomechanical Sensing System

July 17, 2012
Author(s)
Houxun H. Miao, Kartik A. Srinivasan, Vladimir A. Aksyuk
… In parallel, cavity optomechanical systems have achieved quantum-limited displacement sensitivity and ground state … into the sensor. Sensitivity approaching the standard quantum limit is combined with MEMS actuation in a fully …

Asymptotically Optimal Confidences for Rejecting Local Realism

December 22, 2011
Author(s)
Yanbao Zhang, Scott Glancy, Emanuel Knill
… realism are highly desirable for fundamental tests of Quantum Mechanics. Such violations can be quantified in terms … test. PBR-based confidences are valid even if the prepared quantum state varies arbitrarily and the best local realistic …

The Ampere and Electrical Standards

January 1, 2001
Author(s)
Randolph Elmquist, Marvin E. Cage, Yi-hua D. Tang, Anne-Marie Jeffery, Joseph R. Kinard Jr., Ronald F. Dziuba, Nile M. Oldham, Edwin R. Williams
… to develop and refine electrical standards using the quantum Hall effect and the Josephson effect, which are both based on quantum physics. Four projects, covering a number of voltage …

Parallelization and Visualization of Computational Nanotechnology LCAO Method

February 1, 2002
Author(s)
J C. Franiatte, Steven G. Satterfield, Garnett W. Bryant, J E. Devaney
… Accurate atomic-scale quantum theory of nanostructures and nanosystems fabricated … and detectors, biosensors, and nanoarchitectures for quantum coherent technologies such as quantum computing. The tight-binding model based upon the …

Energy Dependent Cross Sections and Nonadiabatic Reaction Dynamics in F( 2 P 3/2 , 2 P 1/2 ) + n-HF(v,J)+H

November 1, 1999
Author(s)
S A. Nizkorodov, W W. Harper, W B. Chapman, B W. Blackmon, David Nesbitt
… IR laser absorption methods are exploited to investigate quantum state-resolved reactive scattering dynamics of F + … equal to}0.3 kcal/mole), in contrast with exact adiabatic quantum calculations which predict a rapid decrease below E … from ground state F( 2 P 3/2 ) atom reactions. These quantum state resolved reactive scattering studies provide …

Energy-Dependent Cross Sections and Nonadiabatic Reaction Dynamics in F( 2 P 3/2 , 2 P 1/2 ) + n-H 2 HF(v,J) + H

November 1, 1999
Author(s)
S A. Nizkorodov, W W. Harper, W B. Chapman, B W. Blackmon, David Nesbitt
… IR laser absorption methods are expoited to investigate quantum state-resolved reactive scattering dynamics of F+n-H … equal to} 0.3 kcal/mole), in contrast with exact adiabatic quantum calculations that predict a rapid decrease below E … from ground state F( 2 P 3/2 ) atom reactions. These quantum state resolved reactive scattering studies provide …
Displaying 2351 - 2375 of 3644
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