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arXiv 1001.4587quant-ph
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拓扑参数与纠缠度关系的研究

A study on the relations between the topological parameter and entanglement

Chunfang Sun, Kang Xue, Gangcheng Wang, Chunfeng Wu

摘要:

本文给出了拓扑参数$d$与投射纠缠态并发性之间的关系。结果表明,对于含$d=n$的情形,两个$n$维量子系统的所有投影纠缠态都是最大纠缠态(即$C=1$).而对于另一种情况,当$d\rightarrow +\infty$用于$n=2$和$3$时,$d\neq n$、$C$均接近$0$。然后我们研究了一类Yang-Baxter哈密顿量的热纠缠和纠缠突然消亡。发现参数$d$不仅影响系统的临界温度$T_{c}$,而且还影响系统所能达到的最大纠缠值。同时我们还发现参数$d$对ESD有很大的影响。

英文摘要:

In this paper, some relations between the topological parameter $d$ and concurrences of the projective entangled states have been presented. It is shown that for the case with $d=n$, all the projective entangled states of two $n$-dimensional quantum systems are the maximally entangled states (i.e. $C=1$). And for another case with $d\neq n$, $C$ both approach $0$ when $d\rightarrow +\infty$ for $n=2$ and $3$. Then we study the thermal entanglement and the entanglement sudden death (ESD) for a kind of Yang-Baxter Hamiltonian. It is found that the parameter $d$ not only influences the critical temperature $T_{c}$, but also can influence the maximum entanglement value at which the system can arrive at. And we also find that the parameter $d$ has a great influence on the ESD.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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