arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.10577physics.atom-ph
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纳米结构碱金属蒸气电池

Nano-structured alkali-metal vapor cells

T. F. Cutler, W. J. Hamlyn, J. Renger, K. A. Whittaker, D. Pizzey, I. G. Hughes, V. Sandoghdar, C. S. Adams

摘要:

纳米尺度系统中的原子-光相互作用为基于集成发射器和光学模式的新技术带来了巨大的希望。我们提出的设计架构,施工方法,和表征的全玻璃碱金属蒸气电池与纳米尺度的内部结构。我们的电池采用无胶设计,允许多功能光学访问,特别是高数值孔径光学器件,并采用外部沉积ITO层形式的紧凑型集成加热系统。通过在不同的照明和检测方案进行光谱学,我们调查原子密度和速度分布在各种纳米景观。我们将双光子激发方案应用于细胞内一维原子,实现了比多普勒宽度小一个数量级以上的共振线宽。我们还证明了亚多普勒线宽的原子限制在两个维度的微米尺寸的通道。此外,我们说明了通过单独的纳米级约束控制我们的细胞内的蒸汽密度,这可以提供一个可扩展的路线,在相互作用体积内的单个原子的室温设备。我们的设计为小型化设备提供了一个强大的平台,可以很容易地与集成光子电路相结合。

英文摘要:

Atom-light interactions in nano-scale systems hold great promise for novel technologies based on integrated emitters and optical modes. We present the design architecture, construction method, and characterization of an all-glass alkali-metal vapor cell with nanometer-scale internal structure. Our cell has a glue-free design which allows versatile optical access, in particular with high numerical aperture optics, and incorporates a compact integrated heating system in the form of an external deposited ITO layer. By performing spectroscopy in different illumination and detection schemes, we investigate atomic densities and velocity distributions in various nanoscopic landscapes. We apply a two-photon excitation scheme to atoms confined in one dimension within our cells, achieving resonance line-widths more than an order of magnitude smaller than the Doppler width. We also demonstrate sub-Doppler line-widths for atoms confined in two dimensions to micron-sized channels. Furthermore, we illustrate control over vapor density within our cells through nano-scale confinement alone, which could offer a scalable route towards room-temperature devices with single atoms within an interaction volume. Our design offers a robust platform for miniaturized devices that could easily be combined with integrated photonic circuits.

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