AI 中文总结
研究利用锌扩散PPLN脊形波导构建光纤集成单光子源，工作于0型简并SPDC模式。其发射宽带光谱，亮度高，预示效率达58(5)%，纯度高。该成果展示了此平台用于波长复用量子网络的可行性。
AI 中文摘要
我们报告了一种基于商用锌扩散MgO:PPLN脊形波导的光纤集成单光子源，该波导工作在0型简并自发参量下转换（SPDC）模式。该装置在电信C波段和L波段发射约70nm的宽带光谱，绝对亮度为$9.1\times 10^{9}$对/(s mW)。考虑光学损耗后，我们确定内部预示效率为58(5)%。该源保持高纯度，符合意外率超过$9\times 10^{4}$，预示二阶关联为$g_{\text{h}}^{(2)}(0) = (5.53 \pm 0.46)\times {10}^{-4}$。低多光子噪声和宽带发射证明了这种平台用于波长复用量子网络的可行性。
英文摘要
We report a fibre-integrated heralded single-photon source based on a commercial Zn-indiffused MgO:PPLN ridge waveguide operated in Type-0 degenerate spontaneous parametric down-conversion (SPDC). The device emits a broadband spectrum spanning approximately 70 nm across the telecom C-and L-bands, with an absolute brightness of $9.1\times 10^{9}$ pairs/(s mW). After accounting for optical losses, we determine an internal heralding efficiency of 58(5)%. The source maintains high purity, exhibiting a coincidences-to-accidentals ratio exceeding $9\times 10^{4}$ and a heralded second-order correlation of $g_{\text{h}}^{(2)}(0) = (5.53 \pm 0.46)\times 10^{-4}$. Low multi-photon noise and broadband emission demonstrate the viability of such platforms for wavelength-multiplexed quantum networking.
Comments9 pages, 7 figures, 1 table
Journal refOpt. Continuum 5, 3079-3090 (2026)
