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THE EVOLUTION OF THE DENSITY OPERATORFOR DRIVEN SYSTEM
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作者 毕桥 《Acta Mathematica Scientia》 SCIE CSCD 1999年第1期97-106,共10页
For studying the evolution of the density operator of the time-dependent dynamical system author presents here a general reformulation of subdynamics of driven system to obtain the efficient dynamical equation. The ex... For studying the evolution of the density operator of the time-dependent dynamical system author presents here a general reformulation of subdynamics of driven system to obtain the efficient dynamical equation. The explicit formulas to calculate the creation operator and the destruction operator are given. A new intertwining relation is discussed, The method presented here can be useful to get the evolution formalism of the density operator for any system driven by an external field. 展开更多
关键词 subdynamics density operator driven system time-dependent Liouvillian
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The Decoherence-Free in Multi-Coupled Quantum Computing System
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作者 LIU Gui ping, BI Qiao,ZHANG Qing jie State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China 《Wuhan University Journal of Natural Sciences》 CAS 1999年第4期428-434,共7页
A subdynamics theory framework for describing multi coupled quantum computing systems is presented first. A general kinetic equation for the reduced system is given then, enabling a sufficient condition to be formula... A subdynamics theory framework for describing multi coupled quantum computing systems is presented first. A general kinetic equation for the reduced system is given then, enabling a sufficient condition to be formulated for constructing a pure coherent quantum computing system. This reveals that using multi coupled systems to perform quantum computing in Rigged Liouville Space opens the door to controlling or eliminating the intrinsic de coherence of quantum computing systems. 展开更多
关键词 quantum computing system subdynamics rigged liouvile space density operator
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GENERAL FORMULISM FOR THE EVOLUTION OF ELECTRORHEOLOGICAL FLUIDS
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作者 毕桥 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 1998年第1期24-32,共9页
For studying the evolution of electrorheological fluids influenced by the external fields, we present a general formulation to obtain the formula of evolution of the density operator. This formulation is based on the... For studying the evolution of electrorheological fluids influenced by the external fields, we present a general formulation to obtain the formula of evolution of the density operator. This formulation is based on the subdynamics of driven system. As showing application of this formulism we demonstrate an algorithm to calculate the conductivity of electrorheological fluid based on an electrostatic polarization model. The method presented here can be used to obtain the evolution of expectation of physical observables for electrorheological fluids. (Author abstract) 8 Refs. 展开更多
关键词 electrorheoligical fluid subdynamics EVOLUTION density operator
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THE EVOLUTION OF WANNIER-MOTT EXCITONS IN NAMI-SEMICONDUCTOR DRIVEN BY A STRONG ELECTRICAL FIELD
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作者 毕侨 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 1998年第4期25-35,共11页
We present here a formulation of subdynamics to calculatee Wannier-Mott excitons in a Nami-semiconductor driven by a strong electrical field. The formula of the evolution of density operator for the time-dependent Lio... We present here a formulation of subdynamics to calculatee Wannier-Mott excitons in a Nami-semiconductor driven by a strong electrical field. The formula of the evolution of density operator for the time-dependent Liouvillian is given. In terms of this formula rue can calculate the nonlinear response of the absorbing coefficient of light for nami-semicouducton. The results are helpful to study either the nonlinear behavior of the Wannier-Mott excitons in a nami-semicouducton driven by a strong harmonic field or the optic properties of these Kinds of materials. 展开更多
关键词 subdynamics Wannier-Mott exciton nami-semiconductor density operator
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Subdynamic Programming Optimization Model on Oil Field Development Program
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作者 沙聚桢 艾文国 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1995年第3期88-94,共7页
SubdynamicProgrammingOptimizationModelonOilFieldDevelopmentProgramSHAJuzhen;AIWenguo沙聚桢,艾文国(Dept.ofSystemEng... SubdynamicProgrammingOptimizationModelonOilFieldDevelopmentProgramSHAJuzhen;AIWenguo沙聚桢,艾文国(Dept.ofSystemEngineering,HarbinIn... 展开更多
关键词 ss:Subdynamic PROGRAMMING OIL FIELD DEVELOPMENT
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Quantum computation in triangular decoherence-free subdynamic space
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作者 Qiao Bi 《Frontiers of physics》 SCIE CSCD 2015年第2期79-85,共7页
A formalism of quantum computing with 2000 qubits or more in decoherence-free subspaces is presented. The subspace is triangular with respect to the index related to the environment. The quantum states in the subspace... A formalism of quantum computing with 2000 qubits or more in decoherence-free subspaces is presented. The subspace is triangular with respect to the index related to the environment. The quantum states in the subspaces are projected states ruled by a subdynamic kinetic equation. These projected states can be used to perform general, large-scale decoherence-free quantum computing. 展开更多
关键词 quantum information subdynamics decoherence-free
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