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arXiv 1705.06397math-phcs.ITmath.ITmath.MPquant-ph
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离散时间双耦合谐振子系统的基态纠缠熵

Ground state entanglement entropy for discrete-time two coupled harmonic oscillators

Watcharanon Kantayasakun, Sikarin Yoo-Kong, Tanapat Deesuwan, Monsit Tanasittikosol, Watchara Liewrian

摘要:

在离散和连续两种情况下,系统的基态纠缠都通过线性熵来量化。结果表明,在两个时间尺度上,纠缠度都随着粒子间相互作用的增加而增加。研究还发现,谐振势的强度影响系统纠缠的形成率。连续时间尺度和离散时间尺度纠缠的不同之处在于,对于离散时间尺度的纠缠,存在一个截止条件。这个条件意味着系统永远不会处于最大纠缠态。

英文摘要:

The ground state entanglement of the system, both in discrete-time and continuous-time cases, is quantified through the linear entropy. The result shows that the entanglement increases as the interaction between the particles increases in both time scales. It is also found that the strength of the harmonic potential affects the formation rate of the entanglement of the system. The different feature of the entanglement between continuous-time and discrete-time scales is that, for discrete-time entanglement, there is a cut-off condition. This condition implies that the system can never be in a maximally entangled state.

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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