Confinement of High- and Low-Field-Seeking Rydberg Atoms Using Time-Varying Inhomogeneous Electric Fields
Confinement of High- and Low-Field-Seeking Rydberg Atoms Using Time-Varying Inhomogeneous Electric Fields
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DOI：
10.1103/physrevlett.122.053203
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发表时间：
2019-02-08
影响因子：
8.6
通讯作者：
Hogan, S. D.
中科院分区：
文献类型：
--
作者：
Deller, A.;Hogan, S. D.
氦原子在高和低场寻求里德伯态与线性和二次斯塔克位移已被限制在两个维度，并引导超过150毫米的距离，使用随时间变化的非均匀电场。这是通过由四个平行圆柱形棒组成的电极结构实现的，施加电压以形成振荡和旋转鞍点场。这两种操作模式导致时间平均的赝势，其将样品限制在围绕装置的轴的高场和低场寻求状态中。的实验数据进行了比较粒子轨迹的数值计算，包括黑体辐射和电场电离的影响的结果。结果突出了单光子黑体诱导跃迁的重要贡献，导致里德堡原子的主量子数的巨大变化。
Helium atoms in high- and low-field-seeking Rydberg states with linear and quadratic Stark shifts have been confined in two dimensions and guided over a distance of 150 mm using time-varying inhomogeneous electric fields. This was achieved with an electrode structure composed of four parallel cylindrical rods to which voltages were applied to form oscillating and rotating saddle-point fields. These two modes of operation result in time-averaged pseudopotentials that confine samples in high-and low-field-seeking states about the axis of the device. The experimental data have been compared to the results of numerical particle trajectory calculations that include effects of blackbody radiation and electric field ionization. The results highlight important contributions from single-photon blackbody-induced transitions that cause large changes in the principal quantum number of the Rydberg atoms.