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Topic Area: Physics

Displaying records 561 to 570 of 777 records.
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561. Femtosecond laser-based synthesis of ultrastable microwave signals from optical frequency references
Topic: Physics
Published: 3/15/2005
Authors: A Bartels, Scott A Diddams, Christopher W Oates, G Wilpers, James C Bergquist, Windell Oskay, Leo W. Hollberg
Abstract: Using femtosecond laser frequency combs to convert optical frequency references to the microwave domain, we demonstrate the synthesis of 10 GHz signals having an instability of <3.5e-15 at 1 s averaging time, limited by the optical reference. The res ...

562. Absolute Radiometers, in Experimental Methods in the Physical Sciences, ed. by A.C. Parr, R.U. Datla and J.L. Gardner
Topic: Physics
Published: 1/1/2005
Authors: N P Fox, Joseph Paul Rice

563. Aging of Spectral Lamps in Space
Topic: Physics
Published: 1/1/2005
Authors: F Kerber, D Lindler, P Bristow, D Lembke, Gillian Nave, Joseph Reader, Craig J Sansonetti, S Heap, Michael R Rosa, H J Wood

564. An X-Ray Tomography Primer,
Topic: Physics
Published: 1/1/2005
Author: Zachary H Levine

565. Development of a Compton Suppression Technique based on a Neural Network-
Topic: Physics
Published: 1/1/2005
Authors: Ryan P Fitzgerald, A E Champagne

566. Fundamental Neutron Physics
Topic: Physics
Published: 1/1/2005
Authors: Jeffrey S Nico, M S Snow

567. Soliton dynamics in mode-locked lasers, ed. by N. Akhmediev and A. Ankiewicz
Topic: Physics
Published: 1/1/2005
Author: Steven T Cundiff

568. 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 ...

569. 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 ...

570. 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 ...

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