Coaxial circuit QED grids for quantum computing

在电路QED中，超导量子比特与微波谐振器耦合，实现了电路中的腔QED，为超导电路量子计算提供了有用的基础。在牛津大学，我们最近开发了一种电路QED的同轴架构，它可以实现量子比特的二维网格，同时保持控制和测量布线在量子比特平面之外，使多量子比特电路的开发不需要复杂的片上布线。该项目将在此基础上开发9-16量子位的网格，以展示该架构扩展到实现实际量子计算水平的潜力。该项目的目标是建立、测量和理解9-16量子位电路的行为，并探索在这种电路中实现多量子位耦合和量子逻辑门的方法。该学生将与其他几名学生和博士后合作，整个团队将致力于在同轴结构中演示量子纠错和通用量子计算。该项目属于EPSRC的“量子光学与信息”和“量子器件、组件和系统”研究领域

In circuit QED, a superconducting qubit is coupled to a microwave resonator, implementing cavity QED in an electrical circuit and providing a useful basis for superconducting circuit quantum computing. In Oxford we have recently developed a coaxial architecture of circuit QED which enables 2D grids of qubits to be implemented while keeping control and measurement wiring out of the qubit plane, enabling multi-qubit circuits to be developed without a requirement for complex on-chip wiring. This project will build on this realization to develop grids of 9-16 qubits to demonstrate the architecture's potential to scale up to a level that implements practical quantum computing. The aims of the project will be to build, measure and understand the behavior of 9-16 qubit circuits, and to explore methods to implement multi-qubit couplings and of quantum logic gates in such circuits. The student will work in collaboration with several other students and postdocs, and the team as a whole will work towards demonstrating quantum error correction and universal quantum computation in the coaxial architecture. This project falls within the EPSRC research areas of 'Quantum Optics and Information' and 'Quantum Devices, Components and Systems