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首页> 外文会议>Advances in photonics of quantum computing, memory, and communication VI >High Numerical Aperture Diffractive Optical Elements for Neutral Atom Quantum Computing
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High Numerical Aperture Diffractive Optical Elements for Neutral Atom Quantum Computing

机译：用于中性原子量子计算的高数值孔径衍射光学元件

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The viability of neutral atom based quantum computers is dependent upon scalability to large numbers of qubits. Diffractive optical elements (DOEs) offer the possibility to scale up to many qubit systems by enabling the manipulation of light to collect signal or deliver a tailored spatial trapping pattern. DOEs have an advantage over refractive micro-optics since they do not have measurable surface sag, making significantly larger numerical apertures (NA) accessible with a smaller optical component. The smaller physical size of a DOE allows the micro-lenses to be placed in vacuum with the atoms, reducing aberration effects that would otherwise be introduced by the cell walls of the vacuum chamber. The larger collection angle accessible with DOEs enable faster quantum computation speeds. We have designed a set of DOEs for collecting the 852 nm fluorescence from the D2 transition in trapped cesium atoms, and compare these DOEs to several commercially available refractive micro-lenses. The largest DOE is able to collect over 20% of the atom's radiating sphere whereas the refractive micro-optic is able to collect just 8% of the atom's radiating sphere.
机译：基于中性原子的量子计算机的生存能力取决于对大量量子位的可伸缩性。衍射光学元件（DOE）通过允许操纵光来收集信号或传递定制的空间陷波图样，从而有可能扩展到许多qubit系统。由于DOE没有可测量的表面垂度，因此它们比折射微光学器件具有优势，从而可以用较小的光学组件访问较大的数值孔径（NA）。 DOE的较小物理尺寸允许将微透镜与原子一起放置在真空中，从而减少了否则会由真空室的单元壁引入的像差效应。 DOE可获得更大的收集角，从而实现更快的量子计算速度。我们设计了一组DOE，用于收集捕获的铯原子中D2跃迁的852 nm荧光，并将这些DOE与几种市售的折射微透镜进行比较。最大的DOE可以收集原子辐射球面的20％以上，而折射微光学系统只能收集原子辐射球面的8％。

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