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stationary Classical Chaos of Trapped Two-Component Bose-Einstein Condensates in 1-D Optical Lattice Potentials

Communications in Theoretical Physics 2007年第7期48卷 125-131页

作者： FANG Jian-Shu LIU Wing-Ki ZHU Shan-Hua1 Institute of Physics,Hunan University of Technology,Zhuzhou 412008,China2 Department of Physics,Hunan Normal University,Changsha 410081,China3 Department of Physics,University of Waterloo,Waterloo,Ontario,Canada N2L 3G1 Institute of Physics Hunan University of Technology Zhuzhou 412008 China Department of Physics Hunan Normal University Changsha 410081 China Department of Physics University of Waterloo Waterloo Ontario Canada N2L 3G1

We study the nonlinear dynamics of two-component Bose-Einstein condensates in one-dimensional pe-riodic optical lattice *** stationary state perturbation solutions of the coupled two-component nonlinearSchr?dinger/Gross-Pitaevskii equations are constructed by using the direct perturbation *** analysisrevels that the perturbation solution is the chaotic one,which indicates the existence of chaos and chaotic region inparameter *** corresponding numerical calculation results agree well with the analytical *** applying thechaotic perturbation solution,we demonstrate the atomic spatial population and the energy distribution of the systemare chaotic generally.

关键词： stationary state classical chaos two-component Bose-Einstein condensates optical lattice potential

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QUANTUM-DOT CELLULAR AUTOMATA

QUANTUM-DOT CELLULAR AUTOMATA

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2004 7th International Conference on Solid-state and Integrated Circuits Technology（ICSICT 2004）

作者： Gregory L.Snider Alexei O.Orlov Ravi Kummamuru John Timler Geza Toth Gary H.Bernstein Craig S.Lent Department of Electrical Engineering University of Notre DameNotre DameIN 46556

＜正＞An introduction to of quantum-dot cellular automata （QCA） is *** is a transistorless nanoelectronic computation paradigm that addresses the issues of device and power density which are becoming increasingly important in the electronics *** of CMOS is expected to come to an end in the next 10-15 years,with perhaps the most important limiting problem being the power density and the resulting heat generated. QCA offers the possibility of circuitry that dissipates many orders of magnitude less power than CMOS,is scalable to molecular dimensions,and provides the power gain necessary to restore signal *** cells are scalable to molecular dimensions and initial measurements have demonstrated single-electron switching within a molecule.

关键词： Quantum dots Quantum cellular automata Polarization Electrons FETs stationary state Nanoscale devices Switches Power engineering computing Electronics industry

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