Enhancement of entanglement transfer in a spin chain by phase-shift control
Enhancement of entanglement transfer in a spin chain by phase-shift control
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DOI：
10.1103/physreva.75.012325
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发表时间：
2006-10
影响因子：
2.9
通讯作者：
K. Maruyama;T. Iitaka;F. Nori
中科院分区：
文献类型：
--
作者：
K. Maruyama;T. Iitaka;F. Nori
我们研究了相移对自旋链中可转移的双自旋纠缠量的影响。我们考虑一个铁磁海森堡或XY自旋链，数值和解析，和两种机制产生的相移，Aharonov-Casher效应，和Dzyaloshinskiii-Moriya相互作用。在这两种情况下，可达到的最大纠缠被证明是显着增强，这表明其在量子信息处理的潜在用途。2007年美国物理学会。
We study the effect of a phase shift on the amount of transferable two-spin entanglement in a spin chain. We consider a ferromagnetic Heisenberg or XY spin chain, both numerically and analytically, and two mechanisms to generate a phase shift, the Aharonov-Casher effect, and the Dzyaloshinskii-Moriya interaction. In both cases, the maximum attainable entanglement is shown to be significantly enhanced, suggesting its potential usefulness in quantum information processing. © 2007 The American Physical Society.