Optical cycling in polyatomic molecules with complex hyperfine structure
Optical cycling in polyatomic molecules with complex hyperfine structure
复制标题
DOI：
10.1103/physreva.108.012813
复制
发表时间：
2023-04
影响因子：
2.9
通讯作者：
Yi Zeng;A. Jadbabaie;Ashay N. Patel;Phelan Yu;T. Steimle;N. Hutzler
中科院分区：
文献类型：
--
作者：
Yi Zeng;A. Jadbabaie;Ashay N. Patel;Phelan Yu;T. Steimle;N. Hutzler
我们已经开发并证明了一个方案，以实现旋转关闭光子循环的多原子分子具有复杂的超精细结构和强子对称性破坏的敏感性，特别是$^{171}$YbOH和$^{173}$YbOH。我们计算了自发衰变的旋转分支比，并确定了使用电光调制器（EOM）来解决超精细结构的再泵浦方案。我们证明了我们的计划，通过循环光子在分子束和验证，我们已经实现了旋转闭合循环通过测量光泵到未处理的振动状态。我们的工作沿着利用光子循环的状态准备，读出和激光冷却的精密测量的多原子分子具有复杂的超精细结构的路径取得进展。
We have developed and demonstrated a scheme to achieve rotationally-closed photon cycling in polyatomic molecules with complex hyperfine structure and sensitivity to hadronic symmetry violation, specifically $^{171}$YbOH and $^{173}$YbOH. We calculate rotational branching ratios for spontaneous decay and identify repumping schemes which use electro-optical modulators (EOMs) to address the hyperfine structure. We demonstrate our scheme by cycling photons in a molecular beam and verify that we have achieved rotationally-closed cycling by measuring optical pumping into unaddressed vibrational states. Our work makes progress along the path toward utilizing photon cycling for state preparation, readout, and laser cooling in precision measurements of polyatomic molecules with complex hyperfine structure.