发表机构
California Institute of Technology; Oratomic（加州理工学院; 奥拉原子）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究利用空间光调制器的局域双折射可调性，实现光镊阵列的局域偏振控制，将其应用于$^{88}\rm{Sr}$原子阵列完成差分光移均匀化等操作，可用于光镊原子钟和多区量子处理器。
AI 中文摘要
囚禁超冷原子与分子的光镊阵列是一种多功能量子科学平台，在量子模拟、量子计算和量子计量学领域具有广泛应用。各向异性矢量和张量光移的偏振依赖性为被囚禁粒子的精确量子态工程提供了一个自由度；同样，态选择性操作依赖于寻址光的偏振，这取决于原子-光耦合强度。然而，控制单个光镊或局域寻址光束的偏振仍是一项实验挑战。在此，我们通过利用空间光调制器的局域双折射可调性，展示了光镊阵列上独立的、位点分辨的线偏振旋转。将该能力应用于$^{88}\rm{Sr}$原子阵列，我们对813nm光镊施加给窄带${^1{\rm S}_0}\rightarrow{^3{\rm P}_1}$跃迁的差分光移进行了均匀化，实现了魔角条件下的边带冷却。此外，我们展示了被囚禁原子在不同偏振区之间的动态输运，具有高存活率和保持的相干性。最后，我们表征了光镊偏振噪声，并展示了以原子跃迁频率为参考的闭环稳定，达到毫弧度级稳定性。我们的工作建立了一种在光镊架构中操纵偏振敏感原子与分子跃迁的技术，可直接应用于光镊原子钟和多区量子处理器。
英文摘要
Optical tweezer arrays trapping ultracold atoms and molecules are a versatile quantum science platform with broad impact in quantum simulation, quantum computation, and quantum metrology. The polarization dependence of anisotropic vector and tensor light shifts offers a degree of freedom for precise quantum state engineering of trapped particles. Similarly, state-selective operations depend on the polarization of the addressing light through the atom--light coupling strength. Yet, methods for controlling the polarization of individual tweezers or local addressing beams remain an experimental challenge. Here, we demonstrate independent, site-resolved linear polarization rotation across an optical tweezer array by exploiting the local birefringence tunability of a spatial light modulator. Applying this capability to an array of $^{88}\rm{Sr}$ atoms, we homogenize differential light shifts imparted by the 813-nm tweezers to the narrow ${^1{\rm S}_0}\leftrightarrow{^3{\rm P}_1}$ transition, enabling sideband cooling under a magic-angle condition. Furthermore, we show dynamic transport of trapped atoms across distinct polarization zones with high survival and preserved coherence. Finally, we characterize tweezer polarization noise and demonstrate closed-loop stabilization referenced to the atomic transition frequency, reaching mrad-level stability. Our work establishes a technique for manipulating polarization-sensitive atomic and molecular transitions in tweezer architectures, with immediate applications to optical tweezer clocks and multi-zone quantum processors.
Comments11 pages, 5 figures
