Perfect Transfer of Many-Particle Quantum State via High-Dimensional Systems with Spectrum-Matched Symmetry

作     者：LI Ying SONG Zhi SUN Chang-Pu 

作者机构：Department of Physics The Key Lab of Weak Light Nonlinear Photonics Ministry of Education Nankai University Tianjin 300071 China Institute of Theoretical Physics the Chinese Academy of Sciences Beijing 100080~ China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2007年第48卷第3X期

页      面：445-448页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：The project supported by National Natural Science Foundation of China under Grant Nos. 90203018  10474104  and 10447133  and the Knowledge Innovation Program (KIP) of the Chinese Academy of Sciences  the National Fundamental Research Program of China under Grant No. 2001CB309310 

主　　题：high-dimensional many-particle system perfect quantum state transfer 

摘      要：The quantum state transmission through the medium of high-dimensional many-particle system （boson or spinless fermion） is generally studied with a symmetry analysis. We discover that, if the spectrum of a Hamiltonian matches the symmetry of a fermion or boson system in a certain fashion, a perfect quantum state transfer can be implemented without any operation on the medium with pre-engineered nearest neighbor （NN）. We also study a simple but realistic near half-filled tight-bindlng fermion system wlth uniform NN hopping integral. We show that an arbitrary many-particle state near the fermi surface can be perfectly transferred to its translational counterpart.