Efficient production of ultracold polar molecules 23Na40K in their absolute ground state via intermediate state of the coupled complex B1π|ν=4⟩ ∼ c3σ+ |ν=25⟩

被引：4
作者：
Li, Zi-Liang [1 ,2 ]
Gu, Zheng-Yu [1 ,2 ]
Wang, Peng-Jun [1 ,2 ]
Zhang, Jing [1 ,2 ]
机构：
[1] Shanxi Univ, Inst Optoelect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China
[2] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China
来源：
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2023年 / 66卷 / 09期
基金：
中国国家自然科学基金;
关键词：
ultracold atoms; ultracold molecule; STIRAP; FESHBACH RESONANCES; GAS; PHASE; NA-23; COLD;
D O I：
10.1007/s11433-023-2148-8
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report on the efficient creation of a sample of 2.2x10(4) fermionic polar molecules (NaK)-Na-23-K-40 in their rovibrational ground state X-1 & sigma;(+) |& nu; = 0, J = 0 & rang; at 247 nK via an intermediate state of the spin-orbit coupled complex B-1 & pi; |& nu; = 4 & rang; & SIM; c(3)& sigma;(+) |& nu; = 25 & rang;. Compared with the intermediate state of the coupled complex B-1 & pi; |& nu; = 12 & rang; & SIM; c(3)& pi;(+) |& nu; = 35 & rang;, this intermediate state has the larger Franck-Condon factors for up- and down-leg coupling of stimulated Raman adiabatic passage (STIRAP). We demonstrate this two-photon pathway to the (NaK)-Na-23-K-40 ground state molecules and find that the one-way STIRAP transfer efficiency reaches 75%. The molecules (NaK)-Na-23-K-40 in their rovibrational ground state are an ideal candidate for the quantum simulation and quantum information of ultracold molecules with long-range interaction.
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页数：8
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