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Updated: Jan 17, 2026

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基于折叠的线性位移干扰仪的聚变纠光子对的紧且稳定的来源

Sarah E McCarthy, Ali Anwar, Daniel K L Oi

|September 23, 2025

概括

我们开发了一个紧的,稳定的源,用于纠的光子对,这对于构建量子网络至关重要. 该系统是为恶劣环境而设计的,因此非常适合用于卫星和移动量子应用.

科学领域:

量子光学就是一个量子光学.
量子信息科学是一种量子信息科学.
光子工程的工程学是光子学.

背景情况:

量子网络需要强大的,小尺寸,重量和功率 (SWaP) 系统,用于远程和移动应用,如卫星.
基于纠的量子通信需要可靠的纠光子对来源.

研究的目的:

开发和描述一个紧,稳定的极化纠光子对源,适合在量子网络中部署,特别是在具有挑战性的环境中.

主要方法:

使用自发性参数向下转换 (SPDC) 在类型-0周期极化乙酸 (PPKTP) 晶体中.
实现了折叠的线性移位干扰仪,采用紧,稳定的双通几何,采用角立方反射器.

主要成果:

实现了250万对/秒/毫瓦的检测对速率 (M对/秒/mW).
显示了高的钟声状态忠实度为94.1%±2.1%.
该源具有紧的尺寸和运行稳定性.

结论:

开发的纠光子对源符合量子网络节点的严格SWaP要求.
它的性能特征使其成为基于纠的量子网络,包括基于空间的系统的实际实施的强有力的候选者.

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