Quantum Geometric Phase's Using In Quantum Information

Quantum information and quantum computation is a rising discipline from the end of the 20th century,and is the product of the combination of quantum theory and modern information science.The computing and information process capacity of quantum computer is far surpass the classical computer,and is a classical computer can not be achieved by.But there are some difficulties still in the implementation,among which is how to maintain the coherence of quantum system in the calculate process and how to achieve error-correct.The new subject attracts much attention internationally from physics both in theory and experiments,and achieved fruitful process.Quantum entanglement and quantum geometric phase have.been studied extensively because of their widely applications in quantum information.I thas positive significance,understanding the physical meaning of quantum entanglement and quantum geometric phase,and applying to quantum information.Taking into account the geometric phase is not sensitive to the outside random local noise and small fluctuation of parameter,use geometric phase to construct the high fidelity factor quantum gates is a very attractive program.In recent years,some literatures say that just use some geometric phase to achieve geometry quantum computing program of quantum gates,based on the aboved-mentioned feature of the quantum geometric phase.As a result of the complex quantum systems exist widely in quantum computing,and the logic operations controlled quantum are achieved all in the complex systems.The proposition of quantum computing program of geometric phase,especially the proposition of quantum geometry logic gate circuit,makes us recognize the importance of research quantum geometric phase in complex systems.On the other hand,quantum entanglement as a peculiar non-local quantum correlation also widely exists in the complex system.It is one of our interested matters that research on the quantum physical phenomena's relationship between quantum entanglement and quantum geometric phase.In this paper.Based on ancestors' excellent work,we have preliminarily studied the quantum physical phenomena's relation between quantum entanglement and quantum geometric phase,and in some degree,discovered the quantum physical phenomena's relation between quantum entanglement and quantum geometric phase In the following work,wo will thoroughly study it !This paper consists of four parts.The first part is the preface,simply introduces the basic principles of quantum computing,then points out the measures used for quantum computing,and points out some current problems.The second part is the text of this paper:the first chapter introduces some matter about the geometry quantum computing,and some matter about the quantum logic gate relates to some advantage and weakness about quantum gates constructed of geometric phase;the second chapter introduces the basic definition,nature and some related concepts about quantum decoherence and quantum entanglement;the third chapter mostly introduces the geometric phase of complex system,and researches the relevance between quantum entanglement and quantum geometric phase by selecting the appropriate Hamiltonian over the previous studies.The last part is the conclusions and discussions,and the work we will do next!...