Highly sensitive photoassociation spectroscopy of ultracold 23Na133Cs molecular long-range states below the 3S1/2 + 6P3/2 limit<xref rid="cpb_26_12_123702_fn1" ref-type="fn">*</xref> <fn id="cpb_26_12_123702_fn1"> <label>*</label> Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0304203), the ChangJiang Scholars and Innovative Research Team in the University of the Ministry of Education of China (Grant No. IRT13076), the National Natural Science Foundation of China (Grant Nos. 91436108, 61378014, 61675121, 61705123, and 11434007), the Fund for Shanxi “1331 Project” Key Subjects Construction, China, and the Foundation for Outstanding Young Scholars of Shanxi Province, China (Grant No. 201601D021001). </fn>

Highly sensitive photoassociation spectroscopy of ultracold ²³Na¹³³Cs molecular long-range states below the 3S_1/2 + 6P_3/2 limit* *

Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0304203), the ChangJiang Scholars and Innovative Research Team in the University of the Ministry of Education of China (Grant No. IRT13076), the National Natural Science Foundation of China (Grant Nos. 91436108, 61378014, 61675121, 61705123, and 11434007), the Fund for Shanxi “1331 Project” Key Subjects Construction, China, and the Foundation for Outstanding Young Scholars of Shanxi Province, China (Grant No. 201601D021001).

Liu Yanyan^{1, 2}, Wu Jizhou^{1, 2, †}, Liu Wenliang^{1, 2}, Wang Xiaofeng^{1, 2}, Wang Wenhao^{1, 2}, Ma Jie^{1, 2}, Xiao Liantuan^{1, 2}, Jia Suotang^{1, 2}

(color online) The long-range parts of the potential energy curves for the c³Σ⁺ state are shown with values for C₆ obtained from our experiment (red dashed line), the experiment by Zabawa^[25] (green line), and the theoretical calculations in Refs. [26] (blue line) and [27] (black line). The value of zero in the vertical coordinate represents NaCs’s (3S_1/2 + 6P_3/2) asymptote (11732.176 cm⁻¹).