Commercial-ready entangled photon source based on poled optical fibers

量子纠缠源之于量子技术，就像激光之于光学技术。激光的发明在50年内创造了价值6500亿美元的光子产业，其应用范围从DVD播放器到工业切割和焊接，从激光手术到远距离通信。没有激光，互联网就不可能出现，同样，纠缠光子源在不久的将来也将扮演同样重要的角色。它们产生的光子破坏了经典粒子无法模仿的量子关联。利用量子关联可以实现经典方法无法实现的功能，如通信的无条件安全性、量子计算的高效算法、量子成像的超高分辨率等。基本的量子纠缠源产生纠缠光子对，即在具有强关联的特殊量子态中制备的光子对。这种相关性使得量子资源的许多非常规用途成为可能。例如，基于纠缠的量子密钥分发（QKD）利用发送到两个远程方的光子的相关性，并允许他们共享公共密钥，任何窃听尝试都将导致可检测的相关性恶化。本项目的目的是开发一种实用的，低成本的，完全基于光纤兼容组件的交钥匙纠缠光子源。我们将利用奥兹在光子封装和产品开发方面的专业知识。量子技术将在21世纪发挥重要作用。纠缠源对于许多量子应用是必不可少的。该提案旨在为开发商业上可行的纠缠源迈出第一步。

Quantum entanglement sources are to quantum technology what lasers are to optical technology. The invention of lasers hascreated a photonics industry worth of $650 billion in 50 years, with applications cover everything from DVD players to industrialcutting and welding, from laser surgery to long-distance communication. The Internet would not have been possible without lasers.Likewise, entangled photon sources will play an equally important role in not-too-distant future. They produce photons exhibitingquantum correlations that cannot be mimicked by classical particles. The quantum correlations can be harnessed to performfunctions impossible to achieve classically, such as unconditional security in communication, efficient algorithm in quantumcomputing, and ultra-high resolution in quantum imaging.A basic quantum entanglement source produces entangled photon pairs, which are pairs of photons prepared in a specialquantum state that exhibits strong correlations. Such correlations enable many unconventional usages of the quantum resource.Entanglement-based quantum key distribution (QKD), for example, utilizes the correlation of the photons sent to two remoteparties and allows them to share a common cryptographic key and any eavesdropping attempt would result in a detectabledeterioration of correlation.The aim of this project is to develop a practical, low-cost, turn-key entangled photon source based entirely on fiber-compatiblecomponents. We will leverage Ozs expertise in photonic packaging and product development. Quantum technology will play animportant role in the 21st century. Entanglement sources are essential for many quantum applications. This proposal aims to takethe first step towards developing commercially viable entanglement sources.