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arXiv quant-ph/0511026quant-ph
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自旋链临界点附近自旋1/2粒子的纠缠

Entanglement induced in spin-1/2 particles by a spin chain near its critical points

X. X. Yi, H. T. Cui, L. C. Wang

摘要:

建立了自旋链临界性与纠缠度之间的关系。我们利用的纠缠是在辅助粒子之间共享的,它们彼此隔离,但耦合到相同的临界自旋1/2链。我们解析地计算了约化的密度矩阵,数值地显示了辅助粒子在自旋链临界点附近的纠缠。我们发现自旋链诱导的纠缠可以达到1,并且它可以很好地指示链的临界点。一个物理理解和实验实现与捕获离子。

英文摘要:

A relation between entanglement and criticality of spin chains is established. The entanglement we exploit is shared between auxiliary particles, which are isolated from each other, but are coupled to the same critical spin-1/2 chain. We analytically evaluate the reduced density matrix, and numerically show the entanglement of the auxiliary particles in the proximity of the critical points of the spin chain. We find that the entanglement induced by the spin-chain may reach one, and it can signal very well the critical points of the chain. A physical understanding and experimental realization with trapped ions are presented.

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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