Coupling Single Atoms to a Nanophotonic Whispering-Gallery-Mode Resonator via Optical Guiding
Coupling Single Atoms to a Nanophotonic Whispering-Gallery-Mode Resonator via Optical Guiding
复制标题
通过光导将单个原子耦合到纳米光子回音壁模式谐振器
DOI：
10.1103/physrevlett.130.103601
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发表时间：
2023
影响因子：
8.6
通讯作者：
Hung, Chen-Lung
中科院分区：
文献类型：
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作者：
Zhou, Xinchao;Tamura, Hikaru;Chang, Tzu-Han;Hung, Chen-Lung
我们展示了一种高效的光学引导技术，用于在平面纳米光子电路的近场中耦合冷原子，并在具有单原子协同性的微环谐振器中实现大原子-光子耦合到回音壁模式。引导势是由纳米光子波导上的衍射光产生的，该波导平滑地连接到远场中的偶极子陷阱，以亚波长精度引导原子。我们观察耦合到微环的光的原子诱导透明度，表征原子-光子耦合率，提取引导原子通量，并演示单原子的片上光子路由。我们的演示有望在纳米光子电路上将冷原子应用于手性量子光学和量子技术。
We demonstrate an efficient optical guiding technique for coupling cold atoms in the near field of a planar nanophotonic circuit, and realize large atom-photon coupling to a whispering-gallery mode in a microring resonator with a single-atom cooperativity. The guiding potential is created by diffracted light on a nanophotonic waveguide that smoothly connects to a dipole trap in the far field for atom guiding with subwavelength precision. We observe atom-induced transparency for light coupled to a microring, characterize the atom-photon coupling rate, extract guided atom flux, and demonstrate on-chip photon routing by single atoms. Our demonstration promises new applications with cold atoms on a nanophotonic circuit for chiral quantum optics and quantum technologies.