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arXiv 1708.01237cond-mat.quant-gasphysics.atom-phquant-ph
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动量态合成晶格中的关联动力学

Correlated dynamics in a synthetic lattice of momentum states

Fangzhao Alex An, Eric J. Meier, Jackson Ang'ong'a, Bryce Gadway

摘要:

我们研究了原子相互作用对动量空间晶格(MSL)中量子模拟的影响,其中离散动量态之间的驱动跃迁模拟合成晶格的站点之间的传输。低能原子碰撞是实空间中的短程碰撞,涉及动量空间中的近无限程相互作用。然而,在可区分的动量态的原子之间增加的交换能导致在动量空间中有效地吸引,有限范围的相互作用。在这项工作中,我们观察到在动量空间双阱中由这种相互作用驱动的自陷的发生,为定制MSL中更复杂的多体研究铺平了道路。我们考虑的现象,可能会导致从这些相互作用的类型,包括在拓扑锯齿形晶格的手征孤子的形成。

英文摘要:

We study the influence of atomic interactions on quantum simulations in momentum-space lattices (MSLs), where driven transitions between discrete momentum states mimic transport between sites of a synthetic lattice. Low energy atomic collisions, which are short ranged in real space, relate to nearly infinite-ranged interactions in momentum space. However, the added exchange energy between atoms in distinguishable momentum states leads to an effectively attractive, finite-ranged interaction in momentum space. In this work, we observe the onset of self-trapping driven by such interactions in a momentum-space double well, paving the way for more complex many-body studies in tailored MSLs. We consider the types of phenomena that may result from these interactions, including the formation of chiral solitons in topological zigzag lattices.

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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