Collecting more than half the fluorescence photons from a single ion
Collecting more than half the fluorescence photons from a single ion
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DOI：
10.1103/physreva.86.043431
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发表时间：
2012-10-26
影响因子：
2.9
通讯作者：
Leuchs, Gerd
中科院分区：
文献类型：
--
作者：
Maiwald, Robert;Golla, Andrea;Leuchs, Gerd
我们证明了一个深抛物面反射镜，覆盖81%的立体角周围的离子的焦点中的单个离子的捕获。考虑到反射镜的反射率，我们推断我们的设置的光子收集效率为54.8%。实验测得Yb-174（+）离子的最大荧光速率为1.91 × 10（6）s（-1），主要受光子探测器量子效率的限制。除了高收集效率之外，将离子阱集成到抛物面镜中是将光有效耦合到自由空间中的单个离子的关键因素。
We demonstrate the trapping of a single ion in the focus of a deep parabolic mirror that covers 81% of the solid angle surrounding the ion. Accounting for the reflectivity of the mirror we infer a photon collection efficiency of 54.8% for our setup. The underlying experimentally detected maximum fluorescence rate is 1.91 x 10(6) s(-1) from a single Yb-174(+) ion, mainly limited by the quantum efficiency of our photon detector. Besides the high collection efficiency, the integration of an ion trap into a parabolic mirror is a key ingredient for efficient coupling of light to a single ion in free space.