Optical-lattice-based method for precise measurements of atomic parity violation
Optical-lattice-based method for precise measurements of atomic parity violation
复制标题
基于光学晶格的原子宇称违反精确测量方法
DOI：
10.1103/physreva.100.050101
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发表时间：
2019
影响因子：
2.9
通讯作者：
Das B. P.
中科院分区：
文献类型：
--
作者：
Kastberg A.;Aoki T.;Sahoo B. K.;Sakemi Y.;Das B. P.
提出了一种测量中性原子宇称破坏的方法。这是一个适应的开创性工作福特森[物理学。70，2383（1993）PRLTA 00031 -900710.1103/PhysRevLett.70.2383]，提出了用于单个捕获离子的方案。在我们的版本中，一个大的中性原子样本应该被定位在一个光学晶格中，与检测点的网格重叠，所有这些都是Fortson工作中的单个点。该方法具有普遍适用性，但作为一个例子，我们估计可实现的信号在探测核自旋无关的宇称违反线上的实验。预测结果是基于现实的参数和ab initocalculations的跃迁振幅，使用相对论耦合集团方法。最后的结果是一个预测的光谱签名，证明宇称违反，1赫兹的顺序，为样本的原子。我们表明，总的询问时间为30 000秒，连同现有的理论数据，足以实现精度的顺序为0.1%的Cs的弱电荷的测定-灵敏度超过以前报道的测定至少5倍。
We propose a method for measuring parity violation in neutral atoms. It is an adaptation of a seminal work by Fortson [Phys. Rev. Lett. 70, 2383 (1993)PRLTAO0031-900710.1103/PhysRevLett.70.2383], proposing a scheme for a single trapped ion. In our version, a large sample of neutral atoms should be localized in an optical lattice overlapping a grid of detection sites, all tailored as the single site in Fortson's work. The methodology is of general applicability, but as an example, we estimate the achievable signal in an experiment probing a nuclear spin independent parity violation on the linein. The projected result is based on realistic parameters andab initiocalculations of transition amplitudes, using the relativistic coupled-cluster method. The final result is a predicted spectroscopic signature, evidencing parity violation, of the order of 1 Hz, for a sample ofatoms. We show that a total interrogation time of 30 000 s should, together with existing theoretical data, suffice for achieving a precision in the determination of the weak charge of Cs of the order of 0.1%—a sensitivity surpassing previously reported determinations by at least a factor of 5.