Quantum Waveguides for Indistinguishable Single Photon Sources 2 (QWISPS-2)

Covesion Ltd和南安普顿大学计划扩大我们的合作可行性研究，研究在利用量子纠缠的单光子源中使用周期性极化的铌酸锂晶体的应用。激光脉冲包含不同数量的光子，在我们的晶体中，这些光子可以被分成两对；根据物理定律，如果这些光子中的一个被创造出来，那么另一个肯定也存在。基于这一前提，探测到一个成对的光子，就会发出另一个光子存在的信号，从而提供可预测的单光子来源，供计算使用。在这个项目中，我们试图降低从不同来源产生类似光子所需的制造公差，我们的目标是在多个设备上证明我们的新方法。这是实现可伸缩量子应用的重要一步，在这些应用中，需要并行地使用许多具有相同属性的可预测光子，例如量子计算。

Covesion Ltd and The University of Southampton plan to extend our collaborative feasibility study investigatingthe use of periodically-poled lithium niobate crystals in single-photon sources for applications exploitingquantum entanglement. Laser pulses contain different numbers of photons and in our crystals these photonscan be split into pairs; the laws of physics state that if one of these photons is created then the other must alsoexist. Based on this premise, detecting one paired photon signals the presence of the other, providing apredictable source of single photons that can be used for computation. In this project, we seek to reduce themanufacturing tolerances required to generate similar photons from different sources and our objective is toprove our new approach across multiple devices. This is an important step in enabling scalable quantumapplications where many predictable photons with the same attributes are needed in parallel, such as quantumcomputing.