发表机构
Center for Theoretical Physics & School of Physics and Optoelectronic Engineering, Hainan University; School of Physics, Renmin University of China; Key Laboratory of Quantum State Construction and Manipulation (Ministry of Education), Renmin University of China（海南大学理论与理论物理中心及物理与光电工程学院; 中国人民大学物理学院; 中国人民大学量子态构建与操控教育部重点实验室）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
提出一种基于三个线偏振微波场和一束激光的对映体特异性泵浦方案，实现手性分子在J=1和J=2转动态间的对映体特异性态转移，并适用于更高角动量态。
AI 中文摘要
基于电偶极跃迁的对映体特异性态转移（ESST）在利用电磁场操控分子的研究中引起了广泛兴趣，并有望成为对映体检测与分离的有力工具。迄今为止，ESST的实验演示主要集中于最低转动角动量态，即$J=0$和$J=1$的分子。然而，实际分子样品可能含有可观的高$J$转动态布居，因此有必要发展适用于这些态的ESST方案。然而，由于高$J$流形包含更多的磁子能级并涉及更复杂的电偶极跃迁网络，不能通过简单直接地扩展现有低$J$方案来推导此类方案。在此，我们提出一种针对涉及$J=1$和$J=2$转动态的手性分子的ESST方案。具体而言，我们的方案基于由三个线偏振微波场和一束激光驱动的对映体特异性泵浦。在该方案下，一个对映体被泵浦到$J=1,2$子流形内的一个对映体特异性暗态，而另一个对映体则被耗散地泵出该流形。我们的策略可以扩展到涉及更高角动量转动态的系统。
英文摘要
Enantiomer-specific state transfer (ESST) based on electric-dipole transitions has attracted considerable interest in the studies of manipulating molecules with electromagnetic fields. It also holds promise as a powerful tool for enantiomer detection and separation. To date, experimental demonstrations of ESST have focused mainly on molecules in the lowest rotational angular-momentum states, namely, $J=0$ and $J=1$. Realistic molecular samples, however, may contain appreciable populations in higher-$J$ rotational states, making it desirable to develop ESST schemes applicable to such states. Nevertheless, one cannot derive such schemes via a simple and straightforward extension of existing low-$J$ schemes, because higher-$J$ manifolds contain more magnetic sub-levels and involve more complicated networks of electric-dipole transitions. Here, we propose an ESST scheme for chiral molecules involving the $J=1$ and $J=2$ rotational states. Specifically, our scheme is based on enantiomer-specific pumping driven by three linearly polarized microwave fields and one laser beam. Under this scheme, one enantiomer is pumped into an enantiomer-specific dark state within a sub manifold with $J=1,2$, whereas the other enantiomer is dissipatively pumped out of this manifold. Our strategy can be extended to systems involving rotational states with even higher angular momenta.
Comments9 pages, 5 figures
