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Secure Communication via Key Generation with Quantum Measurement Advantage in the Telecom Band

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Final performance rept. Aug 2009-Jul 2013

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Our goal was to investigate the use of Keyed Communication in Quantum noise as a key generationdistribution mechanism with uThis report presents the development of an improved aerodynamic model of a flapping wing unmanned aerial vehicle FWUAV. Flapping wing flight is a complex phenomenon encompassing unsteady effects, controls using multiple degrees of freedom, creation of leading edge vortices, significant wing deformation, and extreme angles of attack during flight. These phenomena are not well modeled using the traditional conceptual aerodynamic models originally developed for fixed wing and rotary wing aircraft. In this study, Blade Element Theory is combined with momentum theory called Blade Element Momentum Theory BEMT to estimate aerodynamic loads on a FWUAV. The BEMT model is also combined with experimental scans of a FWUAV wing in a wind tunnel to represent the actual wing shape during flight represented by three-dimensional 3D scatter plots. These scatter plots are translated into spanwise-changing airfoil coordinates and used with thin airfoil theory to estimate the lift coefficient of the wing across the entire span at discrete points in the flap cycle. Finally, this lift coefficient estimation is used in conjunction with BEMT to create a comprehensive model for flapping wing flight and model calculations are compared against experimental of a Coherent-state Pulse-Position Modulation protocol, including designing and constructing in the laboratory proof-of-concept experiments using off-the-shelf telecommunication components, as well as researching security analyses addressing a variety of attack strategies. During this project, on the theoretical front we have completed the investigation of BB84 insecurity. We have shown that trace distance is basically the same guarantee as accessible information and neither is adequate against known-plaintext attacks.

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  • Radio Communications

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