Cold atoms in micromachined waveguides: A new platform for atom-photon interactions
Cold atoms in micromachined waveguides: A new platform for atom-photon interactions
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DOI：
10.1103/physrevresearch.2.033098
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发表时间：
2020-07-17
影响因子：
4.2
通讯作者：
Hackermueller, L.
中科院分区：
文献类型：
--
作者：
Da Ros, E.;Cooper, N.;Hackermueller, L.
混合量子设备，结合原子和光子，可以利用两者的优势，实现量子计算和量子通信的可扩展架构，以及芯片级传感器和单光子源。这种器件的生产取决于它们的原子和光子组件之间的接口的开发。这应该是紧凑的，强大的，并与两个领域的现有技术兼容。在这里，我们展示了这样一个接口。冷铯原子被困在一个横向的，30微米直径的光纤通孔，通过激光微加工创建。当被引导的光与铯D-2线共振时，高达87%的光被原子吸收。相应的每单位长度的光学深度类似于700 cm（-1），高于可比系统的任何报告。这对于小型化和可扩展性很重要。该技术在光波导芯片和其他现有的光子系统中同样有效，为基础研究提供了一个有前途的平台。
Hybrid quantum devices, incorporating both atoms and photons, can exploit the benefits of both to enable scalable architectures for quantum computing and quantum communication, as well as chip-scale sensors and single-photon sources. Production of such devices depends on the development of an interface between their atomic and photonic components. This should be compact, robust, and compatible with existing technologies from both fields. Here we demonstrate such an interface. Cold cesium atoms are trapped inside a transverse, 30 mu m-diameter through hole in an optical fiber, created via laser micromachining. When the guided light is on resonance with the cesium D-2 line, up to 87% of it is absorbed by the atoms. The corresponding optical depth per unit length is similar to 700 cm(-1), higher than any reported for a comparable system. This is important for miniaturization and scalability. The technique can be equally effective in optical waveguide chips and other existing photonic systems, providing a promising platform for fundamental research.