Many experimental platforms for quantum science depend on state control via laser fields. Frequently, however, the control fidelity is limited by optical phase noise. This is exacerbated in stabilized laser systems where high-frequency phase noise is an unavoidable consequence of feedback. Here we implement an optical feedforward technique to suppress laser phase noise in the stimulated Raman adiabatic passage state transfer of ultracold RbCs molecules, across 114 THz, from a weakly bound Feshbach state to the rovibrational ground state. By performing over 100 state transfers on single molecules, we measure a significantly enhanced transfer efficiency of 98.7(1)% limited only by available laser intensity. Published by the American Physical Society 2024

中文翻译：

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通过光学相位噪声的前馈消除实现增强的量子态转移


量子科学的许多实验平台都依赖于通过激光场进行的状态控制。然而，控制保真度通常受到光学相位噪声的限制。在稳定的激光系统中，这种情况会加剧，因为高频相位噪声是反馈不可避免的结果。在这里，我们实现了一种光学前馈技术，以抑制超冷 RbCs 分子在 114 THz 的受激拉曼绝热通过状态转移中，从弱结合 Feshbach 态到旋转基态的受激拉曼绝热通道态中的激光相位噪声。通过对单个分子进行 100 多种状态转移，我们测量到仅受可用激光强度限制的 98.7（1）% 的显着转移效率。 美国物理学会 2024 年出版