A far-off-resonance optical trap for a Ba+ ion
A far-off-resonance optical trap for a Ba+ ion
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DOI：
10.1038/ncomms6587
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发表时间：
2014-11-01
影响因子：
16.6
通讯作者：
Schaetz, Tobias
中科院分区：
文献类型：
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作者：
Huber, Thomas;Lambrecht, Alexander;Schaetz, Tobias
光捕获和离子结合了各自独立研究领域的独特优势。光场可以形成多种潜在的景观，例如中性和带电原子的光学晶格，同时避免已建立的射频陷阱的有害影响。离子通过长程库仑力相互作用，并允许在量子水平上控制和检测其运动和电子状态。在这里，我们展示了在没有射频场的情况下通过远失谐偶极子陷阱对 Ba-138(+) 离子进行光学捕获，将光子散射抑制了三个数量级，并将相关的反冲加热抑制了四个数量级。为了增强光学和混合陷阱的前景，我们演示了一种将杂散电场补偿到低于 9mVm(-1) 水平的方法。例如，我们的结果将与离子原子系综相关，使常见温度降低 4-5 个数量级，进入超冷相互作用和化学领域，预计量子效应将在其中占主导地位。
Optical trapping and ions combine unique advantages of independently striving fields of research. Light fields can form versatile potential landscapes, such as optical lattices, for neutral and charged atoms, while avoiding detrimental implications of established radio-frequency traps. Ions interact via long-range Coulomb forces and permit control and detection of their motional and electronic states on the quantum level. Here we show optical trapping of Ba-138(+) ions in the absence of radio-frequency fields via a far-detuned dipole trap, suppressing photon scattering by three orders of magnitude and the related recoil heating by four orders of magnitude. To enhance the prospects for optical as well as hybrid traps, we demonstrate a method for stray electric field compensation to a level below 9mVm(-1). Our results will be relevant, for example, for ion-atom ensembles, to enable 4-5 orders of magnitude lower common temperatures, accessing the regime of ultracold interaction and chemistry, where quantum effects are predicted to dominate.