论文标题
高保真，低延迟偏振量子态在空心核心的连接管纤维上的频率约为800 nm
High-fidelity, low-latency polarization quantum state transmissions over a hollow-core conjoined-tube fibre at around 800 nm
论文作者
论文摘要
基于光纤的量子信息系统的性能受到二氧化硅玻璃材料的内在特性的限制，例如高潜伏期，瑞利散落损失波长缩放定律以及交叉耦合引起的模态杂质。空心核光纤（HCF）有望统一空气传播的光传播和非视线传播，从而为基于多种光子的量子量子量表应用具有巨大的潜力。基于光子bandgap指南的HCF的早期版本尚未证明自己是可靠的量子通道，因为空间和极化域的模态纯度较差，并且当波长转移到可见区域时，在制造方面也很难制造。在这项工作中，基于自由度的极化程度，我们首先，据我们所知，我们通过使用商业硅单球avalanche photodiodes来证明高保真性（〜0.98）单光子的传输和纠缠光子的单光子传输和分布。我们的CTF意识到了低损失，高空间模式纯度，低极化降解和低色色散的综合优点。我们还展示了单光子低潜伏期（〜99.96％真空中的光速）传输，从而为在基于多功能极化的量子信息处理中广泛使用HCF链路铺平了道路。
The performances of optical fibre-based quantum information systems are limited by the intrinsic properties of silica glass materials, e.g. high latency, Rayleigh-scattering loss wavelength scaling law, and cross-coupling induced modal impurity. Hollow-core optical fibre (HCF) promises to unify air-borne light propagation and non-line-of-sight transmission, thus holding great potentials for versatile photonics-based quantum infor-mation applications. The early version of HCF based on photonic-bandgap guidance has not proven itself as a reliable quantum channel because of the poor modal purity in both spatial and polarization domains, as well as significant difficulty in fabrication when the wavelength shifts to the visible region. In this work, based on the polarization degree of freedom, we first, to the best of our knowledge, demonstrate high-fidelity (~0.98) single-photon transmission and distribution of entangled photons over a conjoined-tube hollow-core fibre (CTF) by using commercial silicon single-photon avalanche photodiodes. Our CTF realized the combined merits of low loss, high spatial mode purity, low polarization degradation, and low chromatic dispersion. We also demonstrate single-photon low latency (~99.96% speed of light in vacuum) transmission, thus paving the way for extensive uses of HCF links in versatile polarization-based quantum information processing.
