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Topic Area: Physics

Displaying records 511 to 520 of 705 records.
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511. Critical field for complete vortex expulsion from narrow superconducting strips
Topic: Physics
Published: 3/5/2004
Authors: G Stan, S. Field, John M. Martinis
Abstract: We have measured the maximum field for which vortices are completely expelled from a thin-film superconducting strip. Niobium strips of width W were field cooled and imaged with a scanning Hallprobe microscope. Below a critical field Bm  0=W2 all ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=30819

512. Absolute-frequency measurements with a stabilized near-infrared optical frequency comb from a Cr:forsterite laser
Topic: Physics
Published: 2/15/2004
Authors: K L Corwin, I Thomann, A Bartels, T Dennis, Richard W Fox, W C Swann, E A Curtis, Christopher W Oates, G Wilpers, S L Gilbert, Leo W. Hollberg, Nathan Reynolds Newbury, Scott A Diddams, J Nicholson, M. F. Yan
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104876

513. Broadband phase-coherent optical frequency synthesis with actively linked Ti:sapphire and Cr:forsterite femtosecond lasers
Topic: Physics
Published: 2/15/2004
Authors: A Bartels, Nathan Reynolds Newbury, I Thomann, Leo W. Hollberg, Scott A Diddams
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104844

514. Long-Range Strains and the Effects of Applied Field at 180 Ferroelectric Domain Walls in Lithium Niobate
Topic: Physics
Published: 2/1/2004
Authors: Terrence J Jach, S. Kim, V. Gopalan, S M Durbin, David S. Bright
Abstract: rroelectric domains with antiparallel polarization are readily induced in congruent LiNbO3 with electric fields above 240 kV/cm at room temperature. Even in the absence of external fields, these 180 walls exhibit wide regions of shear strain, of th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831298

515. Broadening mechanisms and their effects in non-classical correlations on cavity QED with atomic beams
Topic: Physics
Published: 1/1/2004
Authors: F M Dimler, L A Orozco, Joseph Earl Reiner
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101877

516. High-Spectral Purity Microwave Oscillator: Design Using Conventional Air-Dielectric Cavity
Topic: Physics
Published: 1/1/2004
Authors: A Sen Gupta, David Allan Howe, Craig W Nelson, Archita Hati, F L. Walls, J F Garcia-nava
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=105554

517. Accurate control of Josephson phase qubits
Topic: Physics
Published: 12/30/2003
Authors: Matthias Steffen, John M. Martinis, Isaac C. Chuang
Abstract: A quantum bit is a closed two-dimensional Hilbert space, but often experimental systems have three or more energy levels. In a Josephson phase qubit the energy differences between successive levels differ by only a few percent, and hence care must be ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=31378

518. Development and Characterization of a TES Optical Imaging Array for Astrophysics Applications
Topic: Physics
Published: 12/20/2003
Authors: J. Burney, T. Bay, P. Brink, B. Cabrera, J. P. Castle, R. W. Romani, A. Tomada, Sae Woo Nam, Aaron J. Miller, John M. Martinis, E. Wang, T. Kenny, B. Young
Abstract: Our research group has successfully developed photon detectors capable of both time-stamping and energy-resolving individual photons at very high rates in a wide band from near IR through optical and into near UV. We have currently fabricated 32-pixe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=31420

519. Suppression of excess noise in transition-edge sensors using magnetic field and geometry
Topic: Physics
Published: 12/17/2003
Authors: Joel Nathan Ullom, William Bertrand Doriese, Gene C Hilton, James A Beall, Steven Deiker, Kent D Irwin, Carl D Reintsema, Leila R Vale, Yizi Xu
Abstract: We report recent progress at NIST on Mo/Cu Transition-Edge Sensors (TESs). While the signal- band noise of our sensors agrees with theory, we observe excess high-frequency noise. We describe this noise and demonstrate that it can be heavily suppresse ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=31423

520. The Advanced Technology Solar Spectroscopic Imager (ATSSI) - a Novel Experiment Employing a Transition-Edge Sensor to Probe the Soft X-Ray Solar Corona
Topic: Physics
Published: 12/17/2003
Authors: P F Boerner, D S Martinez-Galarce, K Wamba, B. Cabrera, Steven Deiker, Kent D Irwin, T W Barbee, P F Baker
Abstract: The Advanced Technology Solar Spectroscopic Imager (ATSSI) is a sounding rocket-borne experiment that will employ a Transition-Edge Sensor (TES) placed at the focus of a Wolter-I mirror to study large active region loops in the solar corona. The TES ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=31452



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