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You searched on: Author: charles clark

Displaying records 31 to 40 of 220 records.
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31. Reliable Information Retrieval Evaluation With Incomplete and Biased Judgements
Published: 7/23/2007
Authors: Stefan Buttcher, Charles L. Clarke, Peter C Yeung, Ian M Soboroff
Abstract: Information retrieval evaluation based on the pooling method is inherently biased against systems that did not contribute to the pool of judged documents. This may distort the results obtained about the relative quality of the systems evaluated and t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51167

32. 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

33. 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

34. 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

35. 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

36. 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

37. 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

38. 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

39. 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

40. 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



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