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Topic Area: Physics

Displaying records 521 to 530 of 733 records.
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521. Development of a Compton Suppression Technique based on a Neural Network-
Topic: Physics
Published: 1/1/2005
Authors: Ryan P Fitzgerald, A E Champagne
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103125

522. Fundamental Neutron Physics
Topic: Physics
Published: 1/1/2005
Authors: Jeffrey S Nico, M S Snow
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103275

523. Soliton dynamics in mode-locked lasers, ed. by N. Akhmediev and A. Ankiewicz
Topic: Physics
Published: 1/1/2005
Author: Steven T Cundiff
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=106647

524. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50068

525. The optical calcium frequency standards of PTB and NIST
Topic: Physics
Published: 11/5/2004
Authors: U Sterr, C Degenhardt, H Stoehr, Ch. Lisdat, H Schnatz, J Helmcke, F Riehle, G Wilpers, Christopher W Oates, Leo W. Hollberg
Abstract: We describe the current status of the optical calcium frequency standard with laser-cooled neutral atoms realized in two different laboratories for the purpose of developing a possible future optical atomic clock. Frequency measurements performed at ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50037

526. Conducting atomic force microscopy for Nanoscale tunnel barrier characterization
Topic: Physics
Published: 8/13/2004
Authors: Kristine Lang, Dustin Alexander Hite, Raymond Wiley Simmonds, Robert McDermott, David P Pappas, John M. Martinis
Abstract: Increasing demands on nanometer scale properties of oxide tunnel barriers necessitate a consistent means to assess them at these lengths. Here we use conducting atomic force microscopy (CAFM) to characterize aluminum oxide (AlOx)barriers to be used i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=31457

527. Decoherence in Josephson Qubits from Junction Resonances
Topic: Physics
Published: 8/13/2004
Authors: Raymond Wiley Simmonds, Kristine Lang, Dustin Alexander Hite, David P Pappas, John M. Martinis
Abstract: We present experimental data that demonstrates a large reduction in the coherence of a Josephson phase qubit from spurious microwave resonances. These resonances are believed to arise from resonant fluctuators in the tunnel junction that couple to th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=31348

528. Quantum information processing with trapped ions
Topic: Physics
Published: 7/25/2004
Authors: Murray D Barrett, Tobias Schaetz, J Chiaverini, Dietrich G Leibfried, Joseph Wright Britton, Wayne M Itano, John D. Jost, Emanuel H Knill, C. Langer, R Ozeri, David J Wineland
Abstract: We report experiments on the creation and manipulation ofmulti-particle entangled states of trapped atomic ions. The experiments reported here, quantum dense coding and quantum teleportation, constitute a significant step toward performing large-scal ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50091

529. Superconducting transition edge sensor using dilute AlMn alloys
Topic: Physics
Published: 7/6/2004
Authors: Steven Deiker, William Bertrand Doriese, Gene C Hilton, Kent D Irwin, William H Rippard, Joel Nathan Ullom, Leila R Vale, Steve T Ruggiero, Anthony Williams, B. Young
Abstract: We have fabricated a bolometer using a transition-edge sensor (TES) made of Al doped with Mn to suppress the superconducting critical temperature !Tc" of Al from #1 K to #100 mK. The resulting detector exhibits low-frequency noise consistent with t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=31652

530. Extremely low noise microwave signals synthesized from stable CW lasers with femtosecond laser frequency combs
Topic: Physics
Published: 5/17/2004
Authors: A Bartels, Scott A Diddams, Christopher W Oates, G Wilpers, Windell Oskay, James C Bergquist, Leo W. Hollberg
Abstract: A femtosecond laser frequency comb transfers the low phase and frequency noise of a cavity-stabilized CW laser to the microwave domain. Phase noise of -115 dBc/Hz at 1 Hz offset from the 1 GHz carrier is achieved.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50120



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