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You searched on: Author: charles clark

Displaying records 31 to 40 of 226 records.
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31. Metal-Insulator Transition Revisited for Cold Atoms in Non-Abelian Gauge Potentials
Published: 11/20/2006
Authors: Indubala Indradev Satija, D C Dakin, Charles W Clark
Abstract: We discuss the possibility of realizing metal-insulator transitions with ultracold atoms in two-dimensional optical lattices in the presence of artificial gauge potentials. Such transitions have been extensively studied for magnetic fields correspon ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840248

32. Free-space quantum cryptography in the H-alpha Fraunhofer window
Published: 9/1/2006
Authors: D J Rogers, C J Bienfang, Alan Mink, Charles W Clark, Barry J. Hershman, Anastase Nakassis, Xiao Tang, Lijun Ma, David H Su, Carl J Williams
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51339

33. Demonstration of an Active Quantum Key Distribution Network
Published: 8/1/2006
Authors: Xiao Tang, Lijun Ma, Alan Mink, Anastase Nakassis, Hai Xu, Barry J. Hershman, Joshua Bienfang, David H Su, Ronald F Boisvert, Charles W Clark, Carl J Williams
Abstract: We previously demonstrated a high speed, point to point, quantum key distribution (QKD) system with polariztion coding over a fiber link, in which the resulting cryptographic keys were used for one-time pad encryption of real time video signals. In t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50873

34. National Nanotechnology Initiative Interagency Workshop on Instrumentation and Metrology for Nanotechnology Grand Challenge Report
Published: 8/1/2006
Authors: Michael T Postek, Richard R Cavanagh, C M Allocca, Douglas T Smith, Robert D Shull, David A Wollman, David G Seiler, Stephen Knight, A Diebold, Richard M Silver, Charles W Clark, Kevin W Lyons, James R Whetstone, Ronald F Boisvert
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822247

35. Vortices in Attractive Bose-Einstein Condensates in Two Dimensions
Published: 7/7/2006
Authors: L D Carr, Charles W Clark
Abstract: The form and stability of quantum vortices in Bose-Einstein condensates with attractive atomic interactions is elucidated. They appear as ring bright solitons, and are a generalization of the Townes soliton to nonzero winding number m. An in?nite seq ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840197

36. Quantum Key Distribution System Operating at Sifted-Key Rate over 4 Mbit/s
Published: 6/19/2006
Authors: Xiao Tang, Lijun Ma, Alan Mink, Anastase Nakassis, Hai Xu, Barry J. Hershman, Joshua Bienfang, David H Su, Ronald F Boisvert, Charles W Clark, Carl J Williams
Abstract: A complete fiber-based polarization encoding quantum key distribution (QKD) system based on the BB84 protocol has been developed at National Institute of Standard and Technology (NIST). The system can be operated at a sifted key rate of more than 4 M ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150653

37. High Speed Quantum Key Distribution System Supports One-Time Pad Encryption of Real-Time Video
Published: 4/21/2006
Authors: Alan Mink, Xiao Tang, Lijun Ma, Anastase Nakassis, Barry J. Hershman, Joshua C Bienfang, David H Su, Ronald F Boisvert, Charles W Clark, Carl J Williams
Abstract: NIST has developed a high-speed quantum key distribution (QKD) test bed incorporating both free-space and fiber systems. These systems demonstrate a major increase in the attainable rate of QKD systems: over two orders of magnitude faster than other ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=151160

38. High Speed Quantum Key Distribution System Supports One-Time Pad Encryption of Real-Time Video
Published: 4/1/2006
Authors: Alan Mink, Xiao Tang, Lijun Ma, Anastase Nakassis, Barry J. Hershman, Joshua Bienfang, David H Su, Ronald F Boisvert, Charles W Clark, Carl J Williams
Abstract: NIST has developed a high-speed quantum key distribution (QKD) test bed incorporating both free-space and fiber systems. These systems demonstrate a major increase in the attainable rate of QKD systems: over two orders of magnitude faster than other ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150603

39. Experimental Study of High Polarization-Coding Quantum Key Distribution wih Sifted-Key Rates Over Mbit/s
Published: 3/1/2006
Authors: Xiao Tang, Lijun Ma, Alan Mink, Anastase Nakassis, Haolang Xu, Barry J. Hershman, Carl J Williams, C J Bienfang, David H Su, Ronald F Boisvert, Charles W Clark
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51340

40. Frequency-Dependent Polarizabilities of Alkali Atoms From Ultraviolet Through Infrared Spectral Regions
Published: 2/9/2006
Authors: M S. Safronova, B Arora, Charles W Clark
Abstract: We present results of first-principles calculations of the frequency-dependent polarizabilities of all alkali atoms for light in the wavelength range 300-1600 nm, with particular attention to wavelengths of common infrared lasers. We parameterize ou ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840215



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