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Practical Quantum Cryptography for Secure Free-Space Communications

Description: Quantum cryptography is an emerging technology in which two parties may simultaneously generate shared, secret cryptographic key material using the transmission of quantum states of light. The security of these transmissions is based on the inviolability of the laws of quantum mechanics and information-theoretically secure post-processing methods. An adversary can neither successfully tap the quantum transmissions, nor evade detection, owing to Heisenberg's uncertainty principle. In this paper … more
Date: February 1, 1999
Creator: Buttler, W. T.; Hughes, R. J.; Kwiat, P. G.; Lamoreaux, S. K.; Morgan, G. L.; Nordholt, J. E. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Fabrication and characterization of high-speed integrated electro-optic lens and scanner devices

Description: Uniaxial strain impact experiments have been performed to obtain shock compression and release response of a 0.22 g/cm{sup 3} polyurethane foam in a configuration where the foam impacts a thin target witness plate. Wave profiles from a suite of ten experiments have been obtained, where shock amplitudes range from 40 to 500 MPa. A traditional P-{alpha} porous material model generally captures the material response. A fully three-dimensional explicit representation of the heterogeneous foam struc… more
Date: February 1, 1999
Creator: Gahagan, K. T.; Gopalan, V.; Jia, Q. X.; Kawas, M. J.; Mitchell, T. E.; Robinson, J. M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Defect Structures in Semiconducting ReSi{sub 2-x} Epitaxial Thin Films

Description: Narrow band gap semiconductors such as ReSi{sub 2{minus}x} (Eg {approximately} 0.12 eV) are potential materials for infrared detectors. Further, ReSi{sub 2{minus}x} is in thermodynamic equilibrium and has a very small lattice mismatch with Si offering the potential of developing ReSi{sub 2{minus}x} heterojunction devices where the detector element and the signal processing circuitry can be integrated on one Si chip. In a previous study, strong crystallographic alignment between ReSi{sub 2{minus… more
Date: February 1, 1999
Creator: Mahan, J.E.; Mirsa, A. & Mitchell, T.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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