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arXiv 1504.02582cond-mat.quant-gasquant-ph
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玻色-哈伯德链中自旋纠缠波的空间分辨探测

Spatially Resolved Detection of a Spin-Entanglement Wave in a Bose-Hubbard Chain

Takeshi Fukuhara, Sebastian Hild, Johannes Zeiher, Peter Schauß, Immanuel Bloch, Manuel Endres, Christian Gross

摘要:

纠缠是量子多体系统的一个基本性质。然而,它的本地检测是具有挑战性的,到目前为止仅限于离子链中的自旋自由度。在这里,我们测量位于两个晶格位置上的原子的自旋之间的纠缠在一个一维的玻色-哈伯德链,其特点是本地的自旋和粒子数的波动。从一个初始本地化的自旋杂质,我们观察到一个向外传播的纠缠波,并定量显示如何在自旋部门的纠缠迅速减少,增加链中的粒子数波动。

英文摘要:

Entanglement is an essential property of quantum many-body systems. However, its local detection is challenging and was so far limited to spin degrees of freedom in ion chains. Here we measure entanglement between the spins of atoms located on two lattice sites in a one-dimensional Bose-Hubbard chain which features both local spin- and particle-number fluctuations. Starting with an initially localized spin impurity, we observe an outwards propagating entanglement wave and show quantitatively how entanglement in the spin sector rapidly decreases with increasing particle-number fluctuations in the chain.

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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