论文摘要
Topological orders are a class of exotic states of matter characterized by patterns of long-range entanglement. Certain topologically ordered systems are proposed as potential realization of fault-tolerant quantum computation. Topological orders can arise in two-dimensional spin-lattice models. In this paper, we engineer a time-dependent Hamiltonian to prepare a topologically ordered state through adiabatic evolution. The other sectors in the degenerate ground-state space of the model are obtained by applying nontrivial operations corresponding to closed string operators. Each sector is highly entangled, as shown from the completely reconstructed density matrices. This paves the way towards exploring the properties of topological orders and the application of topological orders in topological quantum memory.
论文目录
文章来源
类型: 期刊论文
作者: ZhiHuang Luo,Jun Li,ZhaoKai Li,Ling-Yan Hung,Yi Dun Wan,XinHua Peng,JiangFeng Du
来源: Science China(Physics,Mechanics & Astronomy) 2019年08期
年度: 2019
分类: 基础科学
专业: 物理学
单位: CAS Key Laboratory of Microscale Magnetic Resonance and Department of Modern Physics, University of Science and Technology of China,Department of Physics and Institute for Quantum Science and Engineering, Southern University of Science and Technology,State Key Laboratory of Surface Physics and Department of Physics, Fudan University,Department of Physics and Center for Field Theory and Particle Physics, Fudan University,Collaborative Innovation Center of Advanced Microstructures, Nanjing University,Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China
基金: supported by the National Program on Key Basic Research Project(Grant Nos.2013CB921800,and 2014CB848700),the National Science Fund for Distinguished Young Scholars(Grant No.11425523),the National Natural Science Foundation of China(Grant Nos.11805008,11227901,11734002,11374032,and 91021005),the Strategic Priority Research Program(B)of the CAS(Grant No.XDB01030400),the Research Fund for the Doctoral Program of Higher Education of China(RFDPHEC)(Grant No.20113402110044),the support from the John Templeton foundation(Grant No.39901),supported in part by Perimeter Institute for Theoretical Physics
分类号: O469
页码: 43-49
总页数: 7
文件大小: 457K
下载量: 10