TeH +的光抽运：对寻找不同mp/me的意义
Optical Pumping of TeH+: Implications for the Search for Varying mp/me
摘要：
分子泛音跃迁提供对质子-电子质量比（$μ\equiv m_p/m_e$）的变化敏感的光学频率跃迁。然而，稳健的分子状态制备提出了实现高精度的关键挑战。在这里，我们表征红外和光频宽带激光冷却计划TeH $^+$，一个物种与多个电子跃迁服从持续的激光控制。利用速率方程模拟激光冷却布居动力学，我们估计了使用TeH $^+$可达到的对$μ$的分数灵敏度。我们发现，TeH $^+$的激光冷却可以导致对当前$μ$变化极限的显著改善。
英文摘要：
Molecular overtone transitions provide optical frequency transitions sensitive to variation in the proton-to-electron mass ratio ($μ\equiv m_p/m_e$). However, robust molecular state preparation presents a challenge critical for achieving high precision. Here, we characterize infrared and optical-frequency broadband laser cooling schemes for TeH$^+$, a species with multiple electronic transitions amenable to sustained laser control. Using rate equations to simulate laser cooling population dynamics, we estimate the fractional sensitivity to $μ$ attainable using TeH$^+$. We find that laser cooling of TeH$^+$ can lead to significant improvements on current $μ$ variation limits.
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