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Experimental Observation of the Ground-State Geometric Phase of Three-Spin XY Model

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【Author】 Hui Zhou;Zhao-Kai Li;Heng-Yan Wang;Hong-Wei Chen;Xin-Hua Peng;Jiang-Feng Du;Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics,University of Science and Technology of China;Synergetic Innovation Center of Quantum Information and Quantum Physics,University of Science and Technology of China;High Magnetic Field Laboratory,Hefei Institutes of Physical Science,Chinese Academy of Sciences;

【机构】 Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics,University of Science and Technology of China； Synergetic Innovation Center of Quantum Information and Quantum Physics,University of Science and Technology of China； High Magnetic Field Laboratory,Hefei Institutes of Physical Science,Chinese Academy of Sciences；

【摘要】 The geometric phase has become a fundamental concept in many fields of physics since it was revealed.Recently,the study of the geometric phase has attracted considerable attention in the context of quantum phase transition,where the ground state properties of the system experience a dramatic change induced by a variation of an external parameter.In this work,we experimentally measure the ground-state geometric phase of the threespin XY model by utilizing the nuclear magnetic resonance technique.The experimental results indicate that the geometric phase could be used as a fingerprint of the ground-state quantum phase transition of many-body systems.更多还原

【Abstract】 The geometric phase has become a fundamental concept in many fields of physics since it was revealed.Recently,the study of the geometric phase has attracted considerable attention in the context of quantum phase transition,where the ground state properties of the system experience a dramatic change induced by a variation of an external parameter.In this work,we experimentally measure the ground-state geometric phase of the threespin XY model by utilizing the nuclear magnetic resonance technique.The experimental results indicate that the geometric phase could be used as a fingerprint of the ground-state quantum phase transition of many-body systems.更多还原

【关键词】 Hamiltonian； utilizing； adiabatic； Observation； dramatic； fingerprint； dynamical； interpolation； relaxation； unitary；

【基金】 Supported by the National Key Basic Research Program under Grant Nos 2013CB921800 and 2014CB848700;the National Science Fund for Distinguished Young Scholars under Grant No 11425523;the National Natural Science Foundation of China under Grant Nos 11375167,11227901,91021005 and 11575173;the Strategic Priority Research Program(B)of the Chinese Academy of Sciences under Grant No XDB01030400;the Research Fund for the Doctoral Program of Higher Education of China under Grant No 20113402110044;the China Postdoctoral Science Foundation;the Fundamental Research Funds for the Central Universities

【文献出处】 Chinese Physics Letters ,中国物理快报(英文版) , 编辑部邮箱 ,2016年06期

【分类号】O413
【下载频次】14

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