Quantum state transfer through a thermal spin channel

被引：0
作者：
Su, Xiao Qiang [1 ]
Wang, An Min [2 ]
Yang, Guo Hui [1 ]
机构：
[1] Shanxi Normal Univ, Coll Phys & Informat Engn, Linfen 041004, Peoples R China
[2] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2014年 / 28卷 / 15期
基金：
中国国家自然科学基金;
关键词：
Quantum state transfer; spin channel; thermal state; fidelity;
D O I：
10.1142/S0217979214500908
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The dynamics of quantum state transfer through a thermal spin chain with Heisenberg interaction is discussed by numerically calculating the maximal fidelity in a finite transfer time for the chains with several numbers of sites. We find that the maximal fidelity does not decrease monotonously with the increase in the temperature, but depends on the maximal allowed transfer time. Finally, we compare the results of thermal channel with the transfer through ground state channel.
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页数：8
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