Two-qubit interactions in two spatial dimensions in silicon

硅中两个空间维度的两个量子位相互作用

• 批准号: 2626155
• 金额: --
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2626155
• 关键词: Two; qubit; interactions; two; spatial

Quantum computing platforms that aim to become fault-tolerant via the use of quantum correction protocols require high qubit connectivity. For the surface code, the most forgiving quantum error correction protocol, qubits will need to interact controllably with nearest neighbours located in a two-dimensional array.In this PhD project, you will work towards demonstrating for the first time two-qubit interactions in two spatial dimensions in silicon spin qubit devices. Electron spin qubits in silicon are consolidating their position as a leading candidate to build scalable high-fidelity quantum processors since several recent demonstrations have shown single- and two-qubit gate fidelities exceeding the requirements for fault tolerant thresholds. However, all devices up to now have shown interactions only in 1d. In this PhD project, you will design and validate industry-manufactured silicon devices that will allow you to use spin-spin exchange interaction between neighbour spins in a 2d array to implement two-qubit gates in silicon. A positive outcome of this project will facilitate the development of fault-tolerant silicon-based quantum processors.

旨在通过使用量子校正协议实现容错的量子计算平台需要高量子位连通性。对于表面代码，最宽容的量子纠错协议，量子比特需要与位于二维数组中的最近邻居进行可控的交互。在这个博士项目中，你将首次在硅自旋量子比特器件中演示两个空间维度上的两个量子比特相互作用。硅中的电子自旋量子比特正在巩固其作为构建可扩展高保真量子处理器的主要候选者的地位，因为最近的一些演示表明，单量子比特和双量子比特门保真度超过了容错阈值的要求。然而，到目前为止，所有的设备都只显示了一维的交互。在这个博士项目中，您将设计和验证工业制造的硅器件，这些器件将允许您在二维阵列中使用相邻自旋之间的自旋交换相互作用来实现硅中的两个量子比特门。该项目的积极成果将促进基于硅的容错量子处理器的发展。