论文标题
从藻类在绝缘子微孔谐振器中产生的超光线纠缠式光子对生成
Ultra-bright entangled-photon pair generation from an AlGaAs-on-insulator microring resonator
论文作者
论文摘要
纠缠 - 光子对是量子信息技术的重要资源。纠缠对的芯片尺度源已与各种光子平台集成在一起，包括硅，氮化物，磷化物和硝酸盐，但每个平台都具有限制光子对亮度和质量的基本限制，包括弱光学非线性或高波引导损失。在这里，我们演示了一个新颖的，超低的，损失的藻类岩石悬器平台，能够以$ Q $> $> $> $> $> $> 100万美元的微林共振器产生时间能量纠缠的光子，与现有来源相比，亮度提高了近1,000倍。波导融合的来源的内部生成速率大于$ 20 \ times 10^9 $对sec $^{ - 1} $ mw $^{ - 2} $，发射在1550 nm附近，产生了示意的单光子，产生了$> 99 \％$ purity的示意性单光子，并通过40次超过40个标准的偏向bell utive $> 97 $> 97 c.> 97 c. 97 c。结合藻类的高光学非线性和用于主动组件积分的光学增益，这些都是可伸缩量子光子平台的必不可少的特征。
Entangled-photon pairs are an essential resource for quantum information technologies. Chip-scale sources of entangled pairs have been integrated with various photonic platforms, including silicon, nitrides, indium phosphide, and lithium niobate, but each has fundamental limitations that restrict the photon-pair brightness and quality, including weak optical nonlinearity or high waveguide loss. Here, we demonstrate a novel, ultra-low-loss AlGaAs-on-insulator platform capable of generating time-energy entangled photons in a $Q$ $>1$ million microring resonator with nearly 1,000-fold improvement in brightness compared to existing sources. The waveguide-integrated source exhibits an internal generation rate greater than $20\times 10^9$ pairs sec$^{-1}$ mW$^{-2}$, emits near 1550 nm, produces heralded single photons with $>99\%$ purity, and violates Bell's inequality by more than 40 standard deviations with visibility $>97\%$. Combined with the high optical nonlinearity and optical gain of AlGaAs for active component integration, these are all essential features for a scalable quantum photonic platform.
