We study the state transfer of Bell states in a general XY spin chain using the Dzyaloshinsk^Moriya interaction. Two symmetries of fidelity with the anisotropy parameter axe found. The maximum fidelity is shown to be ...We study the state transfer of Bell states in a general XY spin chain using the Dzyaloshinsk^Moriya interaction. Two symmetries of fidelity with the anisotropy parameter axe 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.展开更多
基金supported by the National Natural Science Foundation of China (Grant Nos. 11075013 and 10974016)
文摘We study the state transfer of Bell states in a general XY spin chain using the Dzyaloshinsk^Moriya interaction. Two symmetries of fidelity with the anisotropy parameter axe 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.