A PAckageD source of Multiplexed Entangled photons (PADME)

** 量子技术（QT）** 正在改变我们的经济和教育。光作为量子信号的载体以及新量子硬件和现有技术之间的接口，在不久的将来将彻底改变计算。例如，纠缠光子-即使相距很远也会紧密相连的光粒子-可以通过可用的光纤网络进行路由，并且在几种量子密码方案和全光量子计算机中都是必需的。为了让光实现其作为量子先驱的使命，我们需要将其嵌入到一个紧凑、可扩展和可批量生产的平台中。借助PADME，我们建议研究 ** 光子集成电路（PIC）** 作为光的量子态源，我们将研究如何从我们自己的PIC元件中产生和提取纠缠光子。由商业铸造厂设计和制造。我们将联合收割机结合我们内部的光子学和光电子封装技术（Bay Photonics），多年的学术研究卓越（斯特拉斯克莱德大学和格拉斯哥大学），以及商业PIC代工厂的最新进展，以提供高性能，紧凑，纠缠光子对的可靠来源，将服务于全球市场，并巩固英国作为世界-量子和光子创新的领导者。我们预计这项可行性研究将刺激进一步的研发和市场意识，以采用量子技术的PIC方法，并开发国家量子PIC供应链。

**Quantum technologies (QT)** are transforming our economy and education. Slowly but steadily delivering novel capabilities to secure communications, measure undetectable signals, and in a not-so-far future, revolutionise computing.Light plays a pivotal role as a carrier for quantum signals and as the interface between the new quantum hardware and the available technology. For example, entangled photons -- light particles strongly connected even when far apart -- can be routed over the available fibre network and are required in several quantum cryptographic schemes and all-optical quantum computers. For light to fulfil its mission as quantum herald, we need to embed it in a compact, scalable, and mass-producible platform.With PADME, we propose investigating **Photonic Integrated Circuits (PICs)** as a source of quantum states of light, following the steps that brought electronics to today's consumer market a few decades ago.We will study how to generate and extract entangled photons from a PIC component of our own design and fabricated by a commercial foundry. We will combine our in-house photonics and optoelectronics packaging know-how (Bay Photonics), years of academic research excellence (Universities of Strathclyde and Glasgow), and the most recent advances of commercial PIC foundries to deliver a high-performance, compact, and reliable source of entangled photon pairs that will service a global market and bolster the UK's position as a world-leader in quantum and photonic innovation.We expect this feasibility study to stimulate further R&D and market awareness into adopting the PIC approach for quantum technologies and developing a national quantum PIC supply chain.