We propose a method to measure the electron electric dipole moment (eEDM) using ultracold entangled francium (Fr) atoms trapped in an optical lattice, yielding an uncertainty below the standard quantum limit. Among the alkali atoms, Fr offers the largest enhancement factor to the eEDM. With a Fr based experiment, quantum sensing using quantum entangled states could enable a search for the eEDM at a level below 10⁻³⁰ ecm. We estimate statistical and systematic errors attached to the proposed measurement scheme based on this quantum sensing technique. A successful quantum sensing of the eEDM could enable the exploration of new physics beyond the standard model of particle physics.

我们提出了一种使用捕获在光学晶格中的超冷纠缠钫 (Fr) 原子测量电子电偶极矩 (eEDM) 的方法，产生低于标准量子极限的不确定性。在碱原子中，Fr 为 eEDM 提供了最大的增强因子。通过基于 Fr 的实验，使用量子纠缠态的量子传感可以在低于 10 ^-30 e cm的水平上搜索 eEDM 。我们基于这种量子传感技术估计了与所提出的测量方案相关的统计和系统误差。eEDM 的成功量子传感可以使探索超越粒子物理学标准模型的新物理学成为可能。