EAGER: PHY-GRS: A Diamond Quantum Control Testbed

量子计算是一种新型的计算，它使用量子力学状态将信息编码到量子比特或量子比特中。一旦量子计算机足够大，它将能够计算出一系列问题的解决方案，这些问题在具有比特的经典计算机上是不可能解决的。然而，由于操作量子比特所需的控制水平，缩放量子计算机是极具挑战性的。在改进量子控制所需的水平上访问多量子比特量子处理器，只存在于拥有构建整个硬件系统的专业知识的实验室中。在这个项目中，PI和他们的团队正在构建一个多量子比特量子处理器，可以由控制工程师使用，而无需硬件方面的高级专业知识。该处理器可供华盛顿大学内外的Quantum Technologies Teaching and Testbeds（QT3）用户设施使用。 QT3是一个独特的教学和用户相结合的设施，为量子技术提供最先进的光学表征工具。作为QT3的一部分，Diamond Quantum Control Testbed可供研究人员通过用户提案机制访问，学生可通过实验室课程，顶点项目和硕士论文访问。 该测试平台基于金刚石中的单个氮空位中心，其中低温和共振激光控制使量子位寄存器的单次读出成为可能。正如IBM最初设想的那样，建立一个小规模的量子计算机将产生量子计算的兴趣和解决方案，建立一个小规模的量子控制寄存器将产生量子控制领域的兴趣和解决方案。获得钻石量子控制试验台将推动量子噪声光谱和解耦控制序列、开放量子系统、簇态断层扫描和纠缠验证以及推进量子系统中的机器学习等领域的进步。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

Quantum computing is a new type of computation that uses quantum mechanical states to encode information in a quantum bit, or qubit. Once a quantum computer is large enough, it will be able to calculate solutions to a set of problems that are not possible to solve on classical computers with bits. Scaling quantum computers is extremely challenging, however, due to the level of control needed to operate the quantum bits. Access to multiple qubit quantum processors at the level needed to improve quantum control only exists in laboratories that have the expertise to build the entire hardware systems. In this project, the PI and their team are building a multi-qubit quantum processor that can be utilized by control engineers without advanced expertise in the hardware. The processor is available to users both within and outside the University of Washington in the Quantum Technologies Teaching and Testbeds (QT3) user facility. QT3 is an unique combined teaching and user facility which provides state-of-the-art optical characterization tools for quantum technologies. As part of QT3, the Diamond Quantum Control Testbed is accessible to researchers via a user proposal mechanism and students via laboratory classes, capstone projects and masters theses. The testbed is based on a single nitrogen-vacancy center in diamond, in which low temperature and resonant laser control enable single shot readout of the qubit register. Just as IBM first envisioned that building a small scale quantum computer would generate interest and solutions in quantum computing, building a small scale quantum control register will generate interest and solutions in the area of quantum control. Access to the Diamond Quantum Control Testbed will enable advances in the areas of quantum noise spectroscopy and decoupling control sequences, open quantum systems, cluster state tomography and entanglement verification, and advancing machine learning in quantum systems.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.