%A Zhang Jian(张剑), Shao Bin(邵彬), Zou Jian(邹健), and Li Qian-Shu(李前树) %T Improving quantum state transfer in a general XY chain via the Dzyaloshinsky–Moriya interaction %0 Journal Article %D 2011 %J Chin. Phys. B %R 10.1088/1674-1056/20/10/100307 %P 100307-100307 %V 20 %N 10 %U {https://cpb.iphy.ac.cn/CN/abstract/article_112306.shtml} %8 2011-10-15 %X We study the state transfer of Bell states in a general XY spin chain using the Dzyaloshinsky-Moriya interaction. Two symmetries of fidelity with the anisotropy parameter are found. The maximum fidelity is shown to be significantly enhanced in cases of an odd number of sites. Enhancement of fidelity on a singlet state is greater than that on the other Bell states in such cases.