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Displaying records 541 to 550 of 754 records.
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541. Quantum walk on a line for a trapped ion
Topic: Physics
Published: 10/30/2009
Authors: Peng Xue, Barry Sanders, Dietrich G Leibfried
Abstract: We show how a quantum walk can be experimentally realized for a single trapped ion and how to interpolate between the quantum and random walk by randomizing the phase of a generalized Hadamard coin flip. The signature of the quantum walk is manifeste ...

542. Quasianalytical modal approach for computing Casimir interactions in periodic nanostructures
Topic: Physics
Published: 10/3/2012
Authors: Francesco Intravaia, Paul S Davids, Ricardo Decca, Vladimir A Aksyuk, Daniel Lopez, Diego A. R. Dalvit
Abstract: We present an almost fully analytical technique for computing Casimir interactions between 1D periodic lamellar gratings based on a modal approach. Our method improves on previous work on Casimir modal approaches for nanostructures by using the exa ...

543. RIS Data Service Operates at the National Institute of Standards and Technology
Topic: Physics
Published: 1/1/1993
Author: Edward Barry Saloman

544. Radiochromic Film
Topic: Physics
Published: 12/31/2009
Authors: Christopher Graham Soares, Sameul Trichter, Slobodan Devic
Abstract: Media that turns color upon being irradiated (coloration detectors) were some of the earliest available detectors for ionizing radiation. Besides conventional silver halide photographic media, which aided in the discovery of x-rays by Rontgen, bariu ...

545. Radon in the Lung: Computer Code Developed
Topic: Physics
Published: 1/1/1993
Authors: Lisa R Karam, Randall S. Caswell

546. Randomized Benchmarking of Multiqubit Gates
Topic: Physics
Published: 6/29/2012
Authors: John P Gaebler, Adam Matthias Meier, Ting Rei Tan, Ryan Steven Bowler, Yiheng Lin, David Hanneke, John D. Jost, Jonathan Home, Emanuel H Knill, Dietrich G Leibfried, David J Wineland
Abstract: As experimental platforms for quantum information processing continue to mature, characterization of the quality of unitary gates that can be applied to their quantum bits (qubits) becomes essential. Eventually, the quality must be sufficiently high ...

547. Ratio of the Al^u+^ and Hg^u+^ Optical Clock Frequencies to 17 Decimal Places
Topic: Physics
Published: 8/25/2008
Authors: Wayne M Itano, Till P Rosenband, David Hume, P.O. Schmidt, Chin W. Chou, A. Brusch, Luca Lorini, Windell Oskay, Robert E. Drullinger, Sarah Bickman, Tara Michele Fortier, Jason Stalnaker, Scott A Diddams, William C Swann, Nathan Reynolds Newbury, David J Wineland, James C Bergquist
Abstract: Frequency standards (atomic clocks) based on narrow optical transitions in ^u27^Al^u+^ and ^u199^Hg^u+^ have been developed over the past several years at NIST. These two types of standards are both based on single ions confined in Paul traps, but di ...

548. Real-Time Generation of the SIM Time Scale (SIMT) from International Clock Comparisons
Topic: Physics
Published: 8/13/2011
Authors: Michael A Lombardi, Jose M. Lopez, Andrew N Novick, Francisco Jimenez, Nelida Diaz-Munoz, Eduardo de Carlos Lopez, Jean-Simon Boulanger, Raymond Pelletier, Ricardo de Carvalho, Raul Solis, Harold Sanchez, Liz Catherine Hernandez Forero, Junior Gordon, Daniel Perez, Eduardo Bances, Leonardo Trigo, Victor Masi, Henry Postigo, Anthony Questelles, Anselm Gittens, Rodrigo Ramos P.
Abstract: The Sistema Interamericano de Metrologia (SIM) is one of the world‰s five major regional metrology organizations (RMOs). The SIM members are the national metrology institutes (NMIs) located in the 34 nations of the Organization of American States (OA ...

549. Realization of a programmable two-qubit quantum processor
Topic: Physics
Published: 11/15/2009
Authors: David Hanneke, Jonathan Home, John D. Jost, Jason Amini, Dietrich G Leibfried, David J Wineland
Abstract: 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 device are predicted to offer significant gains for some impor ...

550. Realization of quantum error correction
Topic: Physics
Published: 12/2/2004
Authors: J Chiaverini, Dietrich G Leibfried, Tobias Schaetz, Murray D Barrett, Brad Rodney Blakestad, Joseph Wright Britton, Wayne M Itano, John D. Jost, Emanuel H Knill, C. Langer, R Ozeri, David J Wineland
Abstract: Scalable quantum computation and communication require error control to protect quantum information against unavoidable noise. Quantum error correction protects quantum information stored in two-level quantum systems (qubits) by rectifying errors wit ...

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