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NIST Authors in Bold

Displaying 126 - 150 of 3642

Randomized Benchmarking of Quantum Gates

January 1, 2007
Author(s)
Emanuel Knill, D. Leibfried, R. Reichle, J. Britton, R. B. Blakestad, J. D. Jost, C. Langer, R Ozeri, Signe Seidelin, David J. Wineland
… A key requirement for scalable quantum computing is that elementary quantum gates can be implemented with sufficiently low error. … the fact that desirable error-probabilities for scalable quantum computing are of the order of 0.0001. Experimentally … ion traps, quantum computing, quantum errors., quantum gates …

Atomic Physics Tests of Nonlinear Quantum Mechanics

August 16, 1990
Author(s)
John J. Bollinger, D J. Heinzen, Wayne M. Itano, S L. Gilbert, David J. Wineland
… Proc. of Foundations of Quantum Mechanics Conference … Foundations of Quantum Mechanics Conference … Atomic Physics Tests of Nonlinear Quantum Mechanics …

Optomechanical Quantum Correlations

May 18, 2017
Author(s)
Thomas P. Purdy, Karen E. Grutter, Kartik A. Srinivasan, Nikolai N. Klimov, Zeeshan Ahmed, Jacob M. Taylor
… We present methods to measure optical quantum correlations arising from an optomechanical … large classical noise sources are present. We demonstrate quantum- backaction-noise-calibrated Brownian motion thermometry as a metrological application of quantum optomechanics. …

Testing quantum expanders is co-QMA-complete

May 31, 2013
Author(s)
Yi-Kai Liu, Stephen P. Jordan, Pawel Wocjan, Adam Bookatz
… A quantum expander is a unital quantum channel that is rapidly mixing, has only a few Kraus operators, and can be implemented efficiently on a quantum computer. We consider the problem of estimating the … Computational complexity, quantum information, quantum expanders, mixing time, …

A Modified Wigner's Inequality for Secure Quantum Key Distribution

October 16, 2008
Author(s)
Stefania Castelletto, Ivo P. Degiovanni, M L. Rastello
… with present implementations of the Ekert protocol for quantum-key distribution based on the Wigner Inequality. We … modified version of this inequality which guarantees safe quantum-key distribution. … entanglement and quantum nonlocality, quantum cryptography, quantum information …

Relativistic Connection of Discrete- and Continuous-Time Quantum Walks

October 16, 2008
Author(s)
Frederick Strauch
… Quantum walks have deep connections to quantum search algorithms, quantum cellular automata, quantum chaotic maps, and quantum … Dirac equation, entanglement, quantum computation, quantum walk … Relativistic Connection of Discrete- and Continuous-Time Quantum Walks …

A quantum ruler for orbital magnetism in moire quantum matter

October 5, 2023
Author(s)
Marlou Slot, Yulia Maximenko, Paul M. Haney, Sungmin Kim, Daniel Walkup, Evgheni Strelcov, En-Min Shih, Dilek Yildiz, Steven R. Blankenship, Kenji Watanabe, Takashi Taniguchi, Yafis Barlas, Nikolai Zhitenev, Fereshte Ghahari Kermani, Joseph A. Stroscio
… properties that underlie the rich emergent phases of moiré quantum matter (MQM) result from the eigenstate geometry of … geometry involves the Berry curvature and the less known quantum metric. Most studies to date have focused on … the Chern topology in MQM, but did not characterize the quantum geometry in detail. For almost a century, magnetic …

A quantum enigma machine: Experimentally demonstrating quantum data locking

August 12, 2016
Author(s)
Daniel Lum, Michael S. Allman, Thomas Gerrits, Cosmo Lupo, Seth Lloyd, Varun Verma, Sae Woo Nam, John Howell
… a truly secret key between parties. The field of Quantum Key Distribution (QKD) solves this problem utilizing fundamental quantum uncertainties. Unfortunately, QKD is currently … and it cannot be employed for direct message transmission. Quantum Data Locking (QDL) employs quantum information theory …

Quantum Measurements of Trapped Ions

January 1, 1992
Author(s)
Wayne M. Itano, James C. Bergquist, John J. Bollinger, J M. Gilligan, D J. Heinzen, F L. Moore, M G. Raizen, David J. Wineland
… Proc. of International Symposium on Quantum Physics and the Universe … International Symposium on Quantum Physics and the Universe … Quantum Measurements of Trapped Ions …

Quantum information at NIST and the federal research agenda

April 29, 2004
Author(s)
Thomas R. O'Brian, C J. Williams
… is a high level review of technical and policy issues in quantum information. … quantum communications, quantum computing, quantum information … Quantum information at NIST and the federal research agenda …

Quadrature Squeezing And Temperature Estimation From The Fock Distribution

November 3, 2022
Author(s)
Italo Pereira Bezerra, Hilma Vasconcelos, Scott Glancy
… variances, are essential parameters states used in various quantum communication and sensing protocols. They are often … Quantum Information Processing … quantum optics, quantum squeezing, quantum tomography …

Bell Sampling from Quantum Circuits

July 8, 2024
Author(s)
Dominik Hangleiter, Michael Gullans
… A central challenge in the verification of quantum computers is benchmarking their performance as a … capabilities. In this work, we find a model of quantum computation, Bell sampling, that can be used for both … sampling, we measure two copies of a state prepared by a quantum circuit in the transversal Bell basis. We show that …

The Mathematics of Quantum Coin-Flipping

December 1, 2022
Author(s)
Carl A. Miller
… article (aimed at the general mathematics community) about quantum cryptography and the philosophy of applied mathematics. The article focuses on quantum coin-flipping, a research problem that has a … Philosophy of mathematics, quantum physics, quantum information, linear algebra, complex …

Quantum Simulations of Classical Annealing Processes

September 26, 2008
Author(s)
Rolando Somma, S. Boixo, Howard Barnum, Emanuel Knill
… We describe a quantum algorithm that solves combinatorial optimization problems by quantum simulation of a classical simulated annealing process. Our algorithm exploits quantum walks and the quantum Zeno effect induced by … quantum computing, quantum algorithms, Monte Carlo Markov …

Photon-pair production and frequency translation using backward-wave spontaneous parametric downconversion

November 16, 2023
Author(s)
Paulina Kuo, Dileep Reddy, Varun Verma, Sae Woo Nam, Andrius Zukauskas, Carlota Canalias
… photons. These spectrally shaped photons are useful for quantum computing and quantum interconnects. For the first time, we experimentally … devices will be important building blocks for quantum information processing. … Optica Quantum … generation, spontaneous parametric downconversion, quantum communication …

Quantum entanglement between an atom and a molecule

May 20, 2020
Author(s)
Yiheng Lin, David Leibrandt, Dietrich Leibfried, Chin-wen Chou
… Expanding quantum control to a broad range of physical systems paves … such as stringent tests of fundamental physics, quantum-enhanced sensors, and quantum information processing. Conventional information … quantum control, entanglement, molecule … Quantum entanglement between an atom and a molecule …

Optimal Quantum Measurements of Expectation Values of Observables

January 24, 2007
Author(s)
Emanuel Knill, Gerardo Ortiz, Rolando Somma
… Experimental characterizations of a quantum system involve the measurement of expectation values of observables for a preparable state |f> of the quantum system. Such expectation values can be measured by … exp(-ia H), it is possible to achieve precision 1/ N (the quantum metrology limit) provided sufficient information …

Clifford-Deformed Surface Codes

March 19, 2024
Author(s)
Arpit Dua, Aleksander Kubica, Liang Jiang, Steven Flammia, Michael Gullans
… variants provide promising approaches to practi- cal quantum error correction (QEC). As recently discovered, a … PRX Quantum … Quantum error correction, surface code, quantum computing …

Realization of a programmable two-qubit quantum processor

November 15, 2009
Author(s)
David Hanneke, Jonathan Home, John D. Jost, Jason Amini, Dietrich G. Leibfried, David J. Wineland
… The universal quantum computer is a device that could simulate any physical … system and represents a major goal for the field of quantum information science. Algorithms performed on such a … for some important computational tasks. In the context of quantum information, "universality" refers to the ability to …

Lower Bounds on Quantum Annealing Times

April 5, 2023
Author(s)
Luis Pedro Garcia-Pintos, Lucas Brady, Jacob Bringewatt, Yi-Kai Liu
… to prepare a target state much faster with more general quantum annealing protocols, rigorous results beyond the … lower bounds on the time needed to successfully perform quantum annealing. The bounds are asymptotically saturated by … superpositions of energy eigenstates, singling out quantum coherence as a computational resource. …

Parallelism for Quantum Computation with Qudits

March 31, 2006
Author(s)
Dianne M. O'Leary
… Robust quantum computation with d-level quantum systems (qudits) poses two requirements: fast, parallel quantum gates and high fidelity two-qudit gates. We first … quantum computing, qudit, universal quantum computation … Parallelism for Quantum Computation with Qudits …

Trapped atomic ions and quantum information processing

July 16, 2006
Author(s)
David J. Wineland, Dietrich G. Leibfried, James C. Bergquist, Brad R. Blakestad, John J. Bollinger, Joseph W. Britton, J Chiaverini, Ryan Epstein, David Hume, Wayne M. Itano, John D. Jost, Emanuel H. Knill, Jeroen Koelemeij, C. Langer, R Ozeri, Rainer Reichle, Till P. Rosenband, Tobias Schaetz, Piet Schmidt, Signe Seidelin, Nobuyasu Shiga, Janus Wesenberg
… The basic requirements for quantum computing and quantum simulation (Single- and multi-qubit gates, long memor … and scalable processing. In the near term, some simle quantum processing protocols are being used to adin in … atom trapping and cooling, quantum control, quantum information processing, …

Quantum Computing With Ions

August 1, 2008
Author(s)
David J. Wineland, C Monroe
… describes methods to generate entanglement and implement quantum information processing with the use of trapped ions. … atom trapping and cooling, computation, entanglement, quantum computation, quantum information processing, quantum control, … Quantum Computing With Ions …
Displaying 126 - 150 of 3642
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