We demonstrate the formation of a single RbCs molecule during the merging of two optical tweezers, one containing a single Rb atom and the other a single Cs atom. Both atoms are initially predominantly in the motional ground states of their respective tweezers. We confirm molecule formation and establish the state of the molecule formed by measuring its binding energy. We find that the probability of molecule formation can be controlled by tuning the confinement of the traps during the merging process, in good agreement with coupled-channel calculations. We show that the conversion efficiency from atoms to molecules using this technique is comparable to magnetoassociation.

中文翻译：

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通过合并光镊形成超冷分子

我们展示了在两个光学镊子合并期间形成单个 RbCs 分子，一个包含单个 Rb 原子，另一个包含单个 Cs 原子。两个原子最初主要处于各自镊子的运动基态。我们确认分子形成并通过测量其结合能确定形成的分子的状态。我们发现分子形成的概率可以通过在合并过程中调整陷阱的限制来控制，与耦合通道计算非常一致。我们表明，使用这种技术从原子到分子的转换效率与磁缔合相当。