Entanglement Generation Using Discrete Solitons in Coulomb Crystals
Entanglement Generation Using Discrete Solitons in Coulomb Crystals
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DOI：
10.1103/physrevlett.113.053001
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发表时间：
2014-07-30
影响因子：
8.6
通讯作者：
Reznik, B.
中科院分区：
文献类型：
--
作者：
Landa, H.;Retzker, A.;Reznik, B.
激光冷却和捕获的离子可以结晶，并具有离散的孤子，这些孤子是库仑晶体的非线性的、拓扑保护的配置。这样的孤子，作为他们的连续对应物，可以在晶体内移动，而他们的离散性导致存在一个间隙分离，空间局域化的运动模式的振荡以上的频谱。建议这些独特的属性的离散孤子可以用于产生不同的网站之间的晶体纠缠，我们研究了一个详细的建议，在国家的最先进的实验技术的背景下。我们分析了周期性驱动的平面离子晶体与光学力的相互作用，揭示了这种结构固有的射频陷阱中的微动效应，而不是线性离子链。所提出的方法需要多普勒冷却的晶体和孤立子的本地化模式单独的边带冷却。由于后者的差距分离几乎与晶体尺寸无关，因此这种方法对于在大的二维和可能的三维系统中产生纠缠和研究系统-环境相互作用特别有用。
Laser-cooled and trapped ions can crystallize and feature discrete solitons that are nonlinear, topologically protected configurations of the Coulomb crystal. Such solitons, as their continuum counterparts, can move within the crystal, while their discreteness leads to the existence of a gap-separated, spatially localized motional mode of oscillation above the spectrum. Suggesting that these unique properties of discrete solitons can be used for generating entanglement between different sites of the crystal, we study a detailed proposal in the context of state-of-the-art experimental techniques. We analyze the interaction of periodically driven planar ion crystals with optical forces, revealing the effects of micromotion in radio-frequency traps inherent to such structures, as opposed to linear ion chains. The proposed method requires Doppler cooling of the crystal and sideband cooling of the soliton's localized modes alone. Since the gap separation of the latter is nearly independent of the crystal size, this approach could be particularly useful for producing entanglement and studying system-environment interactions in large, two-and possibly three-dimensional systems.