54 research outputs found
Spin waves: theory and applications
Magnetic materials can support propagating waves of magnetization; since these are oscillations in the magneto static properties of the material, they are called magneto static waves (sometimes 'magnons' or 'magnetic polarons'). This book discusses magnetic properties of materials, and magnetic moments of atoms and ionsIntroduces magnetism and discusses magnetic properties of materials, magnetic moments of atoms and ions, and the elements important to magnetismCovers magnetic susceptibilities and electromagnetic waves in anisotropic dispersive media among other topicsContains problems at the end of each chapter, many of which serve to expand or explain the material in the textIncludes bibliographies for each chapter that give an entry to the research literature
Single magnon excited states of a Heisenberg spin-chain using a quantum computer
Excited states of spin-chains play an important role in condensed matter
physics. We present a method of calculating the single magnon excited states of
the Heisenberg spin-chain that can be efficiently implemented on a quantum
processor for small spin chains. Our method involves finding the stationary
points of the energy vs wavenumber curve. We implement our method for 4-site
and 8-site Heisenberg Hamiltonians using numerical techniques as well as using
an IBM quantum processor. Finally, we give an insight into the circuit
complexity and scaling of our proposed method.Comment: 12 Pages, 15 figure
Microwave and Quantum Magnetics
Contains research objectives and reports on six research projects.Joint Services Electronics Program (Contract DAAG29-78-C-0020)Joint Services Electronics Program (Contract DAAG29-80-C-0104)United States Air Force (Contract F19628-79-C-0047
Microwave and Millimeter Wave Techniques
Contains reports on two research project.Joint Services Electronics Program (Contract DAABO7-76-C-1400
Electronic and Optical Materials and Applications
Contains research objectives and reports on five research projects.Joint Services Electronics Program (Contract DAAG29-78-C-0020)United States Air Force (Contract F19628-79-C-0047
Microwave and Quantum Magnetics
Contains research objectives and reports on nine research projects.Joint Services Electronics Program (Contract DAAG29-80-C-0104)National Science Foundation (Grant 8008628-DAR)U.S. Army (Contract DAAG29-81-K-0126)U.S. Air Force (Contract F19628-79-C-0047
A Multi-hop Mobile Networking Test-bed for Telematics
An onboard vehicle-to-vehicle multi-hop wireless networking system has been developed to test the realworld performance of telematics applications. The system targets emergency and safety messaging, traffic updates, audio/video streaming and commercial announcements. The test-bed includes a Differential GPS receiver, an IEEE 802.11a radio card modified to emulate the DSRC standard, a 1xRTT cellular-data connection, an onboard computer and audio-visual equipment. Vehicles exchange data directly or via intermediate vehicles using a multi-hop routing protocol. The focus of the test-bed is to (a) evaluate the feasibility of high-speed inter-vehicular networking, (b) characterize 5.8GHz signal propagation within a dynamic mobile ad hoc environment, and (c) develop routing protocols for highly mobile networks. The test-bed has been deployed across five vehicles and tested over 400 miles on the road
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