Optimised colour centre control for diamond quantum technologies

量子通信网络的发展和实现使远程节点之间实现确定性安全的链路成为可能，是实现分布式量子计算的必要步骤。从功能上讲，这归根结底是通过网络传输量子态的能力。不幸的是，没有一个网络是无损的，因此我们必须有某种方法在信息遍历网络时对其进行“刷新”。在传统的电信网络中，这是由放大器处理的，该放大器检测、放大并重新传输光信号。在量子网络中，我们必须保存量子信息，而不仅仅是经典信息，而放大器的模拟被称为“量子中继器”。由于其优异的光学和热学性质，金刚石是一种理想的功能量子中继器的基质晶体。引入到晶体中的杂质可以被认为是具有相关光学和自旋性质的“俘获分子”。然而，实现真正的基于钻石的量子技术需要在材料合成、缺陷生产和缺陷控制方面取得进展。这个项目将使用新的和已建立的颜色中心来设计、制造和表征用于钻石量子技术的主动控制和读出系统。该项目将涉及但不限于：-设计和制造旨在探测和控制在室温和低温下钻石中新颜色中心的单个和小整体的属性的有源设备-使用控制设备调查新的和已建立的颜色中心的基本属性-开发在工程钻石技术项目中开发的新型、低应变材料-开发实验结果，以建立工程量子技术的基础，包括与更广泛的钻石工程技术合作密切合作，为原型“技术演示”设备的生产提供投入

The development and implementation of quantum communication networks enables the possibility of deterministically secure links between remote nodes and is a necessary step in the realization ofdistributed quantum computing. Functionally, this boils down to the ability to transmit quantum states across a network. Unfortunately, no network is lossless and therefore we must have some way of "refreshing" theinformation as it traverses the network. In a classical telecoms network, this is handled by an amplifier, which detects, amplifies, and re-transmits the optical signal. In a quantum network we must preserve quantum information, not just classical, and the analogue of an amplifier is known as a "quantum repeater". Diamond is an ideal host crystal for a functional quantum repeater due to its superlative optical and thermal properties. Impurities introduced into the crystal can be thought of as "trapped molecules" with associated optical and spin properties. However, the realisation of real-world diamond-based quantum technologies requires advances in materials synthesis, defect production, and defect control. This project will design, fabricate, and characterise active control and readout systems for diamond quantum technologies using novel and established colour centres.The project will involve but is not limited to:- the design and fabrication of active devices designed to probe and control the properties of individual and small ensembles of novel colour centres in diamond at room and cryogenic temperatures- investigation into the fundamental properties of novel and established colour centres using the control devices- exploitation of novel, low-strain material developed within the Engineered Diamond Technologies project- development of experimental results into the foundations of an engineered quantum technology, including input into the production of prototype "technology demonstrator" devices in close collaboration with the wider Engineered Diamond Technologies collaboration