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Displaying records 551 to 560 of 777 records.
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551. Quantum simulation and many-body physics with hundreds of trapped ions
Topic: Physics
Published: 9/14/2013
Authors: John J Bollinger, Joseph Wright Britton, Brian C Sawyer
Abstract: By employing forces that depend on the internal electronic state (or spin) of an atomic ion, the Coulomb potential energy of a trapped ion crystal can be modified in a spin-dependent way to mimic effective quantum spin Hamiltonians. We use simple mod ...

552. Quantum simulation of the hexagonal Kitaev model with trapped ions
Topic: Physics
Published: 11/25/2011
Authors: Dietrich G Leibfried, Roman Schmied , Janus H. Wesenberg
Abstract: We present a detailed study of quantum simulations of coupled spin systems in surface-electrode ion-trap arrays, and illustrate our findings with a proposed implementation of the hexagonal Kitaev model [A. Kitaev, Annals of Physics 321,2 (2006)]. The ...

553. Quantum state preparation and control of single molecular ions
Topic: Physics
Published: 2/14/2012
Author: Dietrich G Leibfried
Abstract: Preparing molecules at rest and in a highly pure electronic, rotational and vibrational quantum state is a long standing dream in chemistry and physics, so far only achieved for a select set of molecules in experimental setups dedicated to that speci ...

554. 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 ...

555. 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 ...

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

557. 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 ...

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

559. 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 ...

560. 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 ...

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