Efficient pathway to NaCs ground state molecules
Efficient pathway to NaCs ground state molecules
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DOI：
10.1088/1367-2630/acd411
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发表时间：
2023-02
影响因子：
3.3
通讯作者：
C. Warner;N. Bigagli;A. Lam;W. Yuan;Siwei Zhang;I. Stevenson;S. Will
中科院分区：
文献类型：
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作者：
C. Warner;N. Bigagli;A. Lam;W. Yuan;Siwei Zhang;I. Stevenson;S. Will
我们提出了一个双光子路径的研究NaCs分子转移到其振转基态。从NaCs Feshbach分子开始，我们在900 nm至940 nm的波长范围内进行束缚-束缚激发态光谱，涵盖了c3 <$+，b3 <$+和B1 <$+电子态的30多个振动态。通过对旋转子结构的分析，我们识别出了高度混合的C3 ~（1+）|v=22 b3 1| v=54 π态作为受激拉曼绝热通道的有效桥。我们证明转移到NaCs基态的效率高达88（4）%。高效的转移对于实现强偶极NaCs分子的多体量子相位和单分子的高保真检测是至关重要的，例如，在光晶格中的自旋物理实验和光镊阵列中的量子信息实验中。
We present a study of two-photon pathways for the transfer of NaCs molecules to their rovibrational ground state. Starting from NaCs Feshbach molecules, we perform bound-bound excited state spectroscopy in the wavelength range from 900 nm to 940 nm, covering more than 30 vibrational states of the c3Σ+ , b3Π , and B1Π electronic states. Analyzing the rotational substructure, we identify the highly mixed c3Σ1+ |v=22⟩∼b3Π1 |v=54⟩ state as an efficient bridge for stimulated Raman adiabatic passage. We demonstrate transfer into the NaCs ground state with an efficiency of up to 88(4)%. Highly efficient transfer is critical for the realization of many-body quantum phases of strongly dipolar NaCs molecules and high fidelity detection of single molecules, for example, in spin physics experiments in optical lattices and quantum information experiments in optical tweezer arrays.