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NIST Authors in Bold

Displaying 351 - 375 of 9847

Sisyphus Thermalization of Photons in a Double Quantum Dot

July 29, 2016
Author(s)
Michael Gullans, J. Stehlik, Y.-Y. Liu, Christopher Eichler, Jason Petta, Jacob M. Taylor
… A strongly driven quantum system coupled to a thermalizing bath generically … resonator interacting with a periodically driven double quantum dot (DQD). In the limit of strong driving and long … with current devices and would have broad utility for quantum simulation in circuit quantum electrodynamics. As an …

The SI and Quantum Metrology

December 1, 2017
Author(s)
Carl J. Williams
… many cases, units will be redefined in terms of invariant quantum phenomena. So to a great degree, the progress of … sensitive, accurate, and repeatable measurements of quantum processes. Within NIST, that effort is the … International System of Units, Quantum Based Measurements, Quantum Metrology …

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 in … on multiple pairs of ions in a large-scale trapped-ion quantum processor without increasing control signal power or … Trapped ion, quantum computing, entanglement, rf/microwave techniques for …

Photon-number-discriminating detection using a quantum-dot, optically gated, field-effect transistor

October 1, 2007
Author(s)
Eric Gansen, Mary A. Rowe, M. Greene, Danna Rosenberg, Todd E. Harvey, Mark Su, Robert Hadfield, Sae Woo Nam, Richard Mirin
… photon number of a pulse of light 1-3 enable linear optics quantum computing 4 , affect the security of quantum communications 5 , and can be used to characterize … demonstrate the photon-number-resolving capabilities of a quantum dot, optically gated, field-effect transistor that …

Temperature dependence of quantum dot homogeneous linewidth

May 26, 2006
Author(s)
Joseph J. Berry, Martin Stevens, Richard Mirin, Kevin L. Silverman
… of the ground state homogeneous linewidth in InGaAs/GaAs quantum dots. Measurements are performed on quantum dots in a semiconductor waveguide. … quantum Dot, spectroscopy … Temperature dependence of quantum dot homogeneous linewidth …

Elimination of two level fluctuators in superconducting quantum bits by an epitaxial tunnel barrier

September 7, 2006
Author(s)
Seongshik Oh, Katarina Cicak, Jeffrey S. Kline, Mika Sillanpaa, Jed D. Whittaker, Raymond W. Simmonds, David P. Pappas, Kevin Osborn
… Quantum computing based on Josephson junction technology is … obstacle. Here, we report evidence for improved Josephson quantum bits qubits using a single-crystal Al2O3 tunnel … epitaxial barrier, Josephoson junction, Quantum bit, tunnel junction … Elimination of two level fluctuators in superconducting quantum bits by an epitaxial tunnel barrier …

Quantum-Critical Scale Invariance in Transition Metal Alloy

October 14, 2020
Author(s)
Yasuyuki Nakajima, Tristin Metz, Christoper Eckberg, Kevin Kirshenbaum, Alex Hughes, Renxiong Wang, Limin Wang, Shanta Saha
… Quantum-mechanical fluctuations between competing phases at Τ … and thermodynamic properties [5] in the vicinity of a quantum critical point, and are often intimately linked to … superconductivity, however, precludes direct access to the quantum critical point, and makes it difficult to assess the …

Detection of fractional quantum Hall states by entropy-sensitive measurements

March 17, 2025
Author(s)
Nishat Sultana, Robert Rienstra, K Watanabe, T Taniguchi, Joseph Stroscio, Nikolai Zhitenev, D Feldman, Fereshte Ghahari Kermani
… per charge carrier1 which can probe strongly interacting quantum systems ranging from black holes2 to the fractional quantum Hall effect (FQHE)3,4. This makes thermopower a … to excess entropy in certain even denominator fractional quantum Hall (FQH) states5,6. In this article, we report the …

Precise evaluation of the 129 k? and 1 M? quantum Hall array devices for a quantum Wheatstone bridge

August 24, 2020
Author(s)
Takehiko Oe, Alireza R. Panna, Randolph E. Elmquist, Dean G. Jarrett, Yasuhiro Fukuyama, Nobu-Hisa Kaneko
… We have fabricated 129 kΩ and 1 MΩ quantum Hall array devices using GaAs/AlGaAs heterostructures … and electrical insulation measurements. Given these quantum Hall array devices, an accuracy of better than 1×10-7 … measurements will be achieved, through a simple cryogenic quantum Wheatstone bridge technique. These devices could also …

Multiphoton quantum metrology with neither pre- nor post-selected measurements

October 21, 2021
Author(s)
Chenglong You, Mingyuan Hong, Peter Bierhorst, Adriana Lita, Scott Glancy, Steven Kolthammer, Emanuel Knill, Sae Woo Nam, Richard Mirin, Omar Magana-Loaiza, Thomas Gerrits
… The quantum statistical fluctuations of the electromagnetic field … on classical technologies, which can be lifted by quantum technologies. In this regard, the possibility of using every photon produced by quantum sources of light to estimate small physical … quantum enhanced sensing, quantum metrology, transition edge …

Indistinguishable photons from deterministically integrated single quantum dots in heterogeneous GaAs/Si3N4 quantum photonic circuits

September 15, 2019
Author(s)
Peter Schnauber, Anshuman Singh, Johannes Schall, Suk I. Park, Jin Dong Song, Sven Rodt, Kartik Srinivasan, Stephan Reitzenstein, Marcelo I. Davanco
… lithography we deterministically integrate single InAs quantum dots into heterogeneous GaAs/Si3N4 waveguide … microphotoluminescence spectroscopy, we show on-chip quantum dot emission of single, postselected … quantum dots, quantum photonics, single-photon sources, …

Computer Development at the National Bureau of Standards

September 1, 2000
Author(s)
Russell A. Kirsch
… The first fully operational, automatic, electronic computer in the United States was built at the National … Bureau of Standards. The Standards Electronic Automatic Computer (SEAC) began productive computation in May 1950. Although originally intended as an interim computer, it had a productive life of 14 years with a …

Environment-assisted quantum control of a solid state spin via 2-color coherent dark states

September 7, 2014
Author(s)
Jacob M. Taylor, Jack Hansom, Carsten Schulte, Claire Le Gall, Clemens Matthiesen, Edmund Clarke, Maxime Hugues, Mete Atature
… Semiconductor quantum dots (QDs) offer an efficient and scalable interface … considered detrimental to coherent control of the spin quantum bit. Here, we demonstrate the creation of electron … Once a dark state is generated, we demonstrate multi-axis quantum control of the spin state, implemented through phase …

Quantum information processing and metrology with trapped ions

January 25, 2011
Author(s)
David J. Wineland, Dietrich G. Leibfried
… The use of trapped atomic ions in the field of quantum information processing is briefly reviewed. We … in applied and basic science, such as in metrology and quantum simulation, are briefly discussed. … coherent quantum control, quantum information processing, quantum …

100-km entanglement distribution with coexisting quantum and classical signals in a single fiber

July 5, 2024
Author(s)
Anouar Rahmouni, Paulina Kuo, Ya-Shian Li-Baboud, Ivan Burenkov, Yicheng Shi, Jabir Marakkarakath Vadakkepurayil, Nijil Lal Cheriya Koyyottummal, Dileep Reddy, Mheni Merzouki, Lijun Ma, Abdella Battou, Sergey Polyakov, Oliver T. Slattery, Thomas Gerrits
… The development of prototype metropolitan-scale quantum networks is underway and entails transmitting quantum information via single photons through deployed … Among the major challenges in metropolitan-scale quantum networks are compensation of polarization mode …

Photon Number Resolution Enables Quantum Receiver for Realistic Coherent Optical Communications

November 17, 2014
Author(s)
Francisco E. Becerra Chavez, Jingyun Fan, Alan L. Migdall
… Quantum-enhanced measurements can provide information about … However, this advantage can be achieved only if quantum measurement technologies are robust against losses … and realistic imperfections. Here we demonstrate a robust quantum receiver for the coherent communication channel that …

The quantum Zeno paradox, 42 years on

January 25, 2019
Author(s)
Wayne M. Itano
… The term 'quantum Zeno paradox' or 'quantum Zeno effect' refers to the slowing down of the evolution of a quantum system as it is observed more and more frequently. In … ion storage, quantum mechanics, Zeno effect … The quantum Zeno paradox, 42 years on …

Automated extraction of capacitive coupling for quantum dot systems

May 24, 2023
Author(s)
Joshua Ziegler, Florian Luthi, Mick Ramsey, Felix Borjans, Guoji Zheng, Justyna Zwolak
… Gate-defined quantum dots (QDs) have appealing attributes as a quantum computing platform. However, near-term devices … machine learning, quantum dots, autonomous control, virtual gates … Automated extraction of capacitive coupling for quantum dot systems …

Intelligent-Fabric Computing: Challenges and Opportunities

November 8, 2022
Author(s)
Min Chen, Jia Liu, Pan Li, Hamid Gharavi, Yixue Hao, Jingyu Ouyang, Long Hu, Chong Hou, Iztok Humar, Lei Wei, Guang-Zhong Yang, Guangming Tao
… with their environments immersively. The idea of pervasive computing is becoming a reality, but due to the inconvenience … technology in the post-Moore era, we propose a novel computing approach that creates a paradigm shift driven by intelligent-fabric computing and advocate a new concept of non-chip sensing in …

Quasiparticle-Continuum Level Repulsion in a Quantum Magnet

March 1, 2016
Author(s)
K. W. Plumb, Kyusung Hwang, Yiming Qiu, Leland Harriger, G. E. Granroth, Alexander I. Kolesnikov, G. J. Shu, F. C. Chou, Ch. Ruegg, Yong Baek Kim, Young-June Kim
… When the energy eigenvalues of two coupled quantum states approach each other in a certain parameter … two quasiparticles are present; for example, in an open quantum system where a quasiparticle can spontaneously decay … study of magnetic quasiparticles in a frustrated quantum magnet BiCu 2 PO 6 , we observe a renormalization of …

The Computational Complexity of Enforceability Validation for Generic Access Control Rules

June 14, 2006
Author(s)
Chung Tong Hu, David R. Kuhn, David F. Ferraiolo
… is the efficiency of such systems, i.e., what is the computational complexity for the enforceability validation of … both of these problems are NP-Complete by using some basic computational theorems applied to the components of the … access control, computational complexity, enforceability validation …
Displaying 351 - 375 of 9847
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