| Concurrence of Quantum States： Algebraic Dynamical Method Study XXX Models in a Time-Depending Random External Field |
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| 引用本文： | 付传技,朱钦圣,邬邵轶. Concurrence of Quantum States： Algebraic Dynamical Method Study XXX Models in a Time-Depending Random External Field[J]. 理论物理通讯, 2010, 53(6): 1072-1076 |
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| 作者姓名： | 付传技 朱钦圣 邬邵轶 |
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| 摘 要： | Based on algebraic dynamics and the concept of the concurrence of the entanglement, we investigate the evolutive properties of the two-qubit entanglement that formed by Heisenberg XXX models under a time-depending external field. For this system, the property of the concurrence that is only dependent on the coupling constant J and total values of the external field is proved. Furthermore, we found that the thermal concurrence of the system under a static random external field is a function of the coupling constant J, temperature T, and the magnitude of external field.
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| 关 键 词： | XXX模型 代数动力学 动力学方法 时间 随机 量子态 耦合常数 量子比特 |
Concurrence of Quantum States: Algebraic Dynamical Method Study XXX Models in a Time-Depending Random External Field |
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| FU Chuan-Ji,ZHU Qin-Sheng,WU Shao-Yi. Concurrence of Quantum States: Algebraic Dynamical Method Study XXX Models in a Time-Depending Random External Field[J]. Communications in Theoretical Physics, 2010, 53(6): 1072-1076 |
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| Authors: | FU Chuan-Ji ZHU Qin-Sheng WU Shao-Yi |
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| Affiliation: | 1.Department of Applied Physics, University of Electronic Science and;Technology of China, Chengdu 610054, China;2.International Centre for Materials Physics, Chinese Academy of Science, Shenyang 110016, China |
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| Abstract: | Based on algebraic dynamics and the concept of the concurrence of the entanglement, we investigate the evolutive properties of the two-qubit entanglement that formed by Heisenberg XXX models under a time-depending external field. For this system, the property of the concurrence that is only dependent on the coupling constant J and total values of the external field isproved. Furthermore, we found that the thermal concurrence of thesystem under a static random external field is a function of the coupling constant J, temperature T, and the magnitude of external field. |
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| Keywords: | concurrence algebraic dynamical method entanglement |
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