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Topic Area: Physics

Displaying records 531 to 540 of 776 records.
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531. Characterization and Calibration of an Optical Time Domain Reflectometer Calibrator
Topic: Physics
Published: 8/23/2006
Authors: Donald R Larson, Nicholas G Paulter Jr, Kenneth C Blaney
Abstract: We report the results of an investigation into the signal characteristics and behavior of an instrument used to calibrate Optical Time Domain Reflectometers. This instrument implements the Telecommunications Industry Association standard TIA/EIA-455- ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32309

532. A compact phase delay technique for increasing the amplitude of coherent population trapping resonances in open Lambda systems
Topic: Physics
Published: 8/1/2006
Authors: V Shah, Svenja A Knappe, P Schwindt, Vladislav Gerginov, John E Kitching, Leo W. Hollberg
Abstract: We propose and demonstrate a novel technique for increasing the amplitude of coherent population trapping (CPT) resonance in open Lambda systems. The technique requires no complex modifications to the conventional CPT setup and is compatible with sta ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841929

533. A single-ion optical clock with high accuracy
Topic: Physics
Published: 7/14/2006
Authors: W Oskay, Scott A Diddams, Elizabeth A Donley, Tara Michele Fortier, Thomas Patrick Heavner, Leo W. Hollberg, Wayne M Itano, Steven R Jefferts, M J. Jensen, Kyoungsik Kim, F Levi, Thomas Edward Parker, James C Bergquist
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841942

534. Heating Rates and Enhanced Equilibration Rates with Strongly Correlated Ions in a Penning-Malmberg Trap
Topic: Physics
Published: 6/25/2006
Authors: John J Bollinger, Marie J Jensen, T Hasegawa, D HE Dubin
Abstract: We laser cool up to 10^u6^ ^u9^Be^u+^ ions to ~ 1 mK in a Penning-Malmberg trap and measure the ion temperature as a function of time after turning off the cooling laser. We observe a rapid heating of the ions when the their temperature in a directio ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50410

535. A Local Oscillator for Chip-Scale Atomic Clocks at NIST
Topic: Physics
Published: 6/5/2006
Authors: Alan Brannon, J Breitbarth, Z Popovic, Vladislav Gerginov, V Shah, Svenja A Knappe, Leo W. Hollberg, John E Kitching
Abstract: We report the first local oscillator (LO) demonstrating viability in terms of performance, size, and power, for chip-scale atomic clocks (CSAC) at the National Institute of Standards and Technology in Boulder, CO. This volgate-controlled oscillator ( ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50388

536. Relativity and Timing in X-ray Pulsar Navigation
Topic: Physics
Published: 6/5/2006
Authors: Neil Ashby, David Allan Howe
Abstract: XNAV is a technology demonstration that will use photons from X-ray pulsars for navigation and spacecraft attitude determination. This paper summarizes relativistic effects in the context of XNAV. It also characterizes the primary task in the time do ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50396

537. Government Jobs for Physicists: Believe It or Not Challenging and Satisfying!
Topic: Physics
Published: 5/30/2006
Author: David G Seiler
Abstract: This presentation details the benefits of government positions for physicists based on the experiences of a NIST Division Chief.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32273

538. Optical and microwave frequency synthesis with an integrated fiber frequency comb
Topic: Physics
Published: 5/21/2006
Authors: L Hartl, Martin E. Fermann, W Swann, John J. McFerran, Ian R Coddington, Qudsia Quraishi, Scott A Diddams, Nathan Reynolds Newbury, Carston Langrock, M M Fejer, P. S. Westbrook, Jeffrey W. Nicholson, K Feder
Abstract: We demonstrate optical coherence over a broad spectral range of two independent fiber frequency combs. Additionally, we demonstrate microwave stability of better than 2x10^u-14^ in 1 second for an optically integrated fiber frequency comb.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50363

539. High resolution analysis of the 26 and 2 9 9 bands of propane
Topic: Physics
Published: 5/8/2006
Authors: Jean-Marie Flaud, Walter Joseph Lafferty, F. Kwabia Tchana
Abstract: Using high-resolution Fourier transform spectra of propane recorded in the 13.4 μm (resolution of 0.002 cm-1) and in the 27.4 μm (resolution 0.0011 cm-1) spectral regions, it was possible to perform a thorough assignment of both the ν ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903598

540. Recent experiments in trapped-ion quantum information processing at NIST
Topic: Physics
Published: 5/1/2006
Authors: J Chiaverini, Matthew P. Barrett, Brad Rodney Blakestad, Joseph Wright Britton, Wayne M Itano, John D. Jost, Emanuel H Knill, C. Langer, Dietrich G Leibfried, R Ozeri, T Schaetz, David J Wineland
Abstract: Atomic ions confined in segmented trap arrays provide a system for quantum information processing. We report on the execution of two simple quantum algorithms, quantum error correction and the quantum Fourier transform, using this implementation. The ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841893



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