Coherent transfer of information between distant silicon-based quantum devices

每种量子计算技术的一个基本要素是执行受控的两个量子比特相互作用的能力。最简单的量子计算模型要求这些相互作用是局域性质的，即最近的邻居，然而，以非局域方式增加量子比特连接增加了并行操作的可能性，同时降低了机器的技术规格。在这个博士项目中，你将探索一种使用相干自旋-光子相互作用在硅基量子计算机中实现非局域相互作用的方法。对于自旋量子比特，您将使用基于CMOS的量子器件，因为它们与VLSI制造工艺兼容。你的任务将是开发微波单光子电路，以在空间分离的硅设备中建立远距离自旋之间的微波共振相互作用。该项目的积极成果将促进硅基量子处理器的开发，并在不同内核之间建立链接，以运行并行量子计算算法。

An essential ingredient of every quantum computing technology is the ability to perform controlled two-qubit interactions. The simplest quantum computational models require those interactions to be of local nature i.e. nearest neighbours, however increasing qubit connectivity in a non-local way increases the possibility to parallelise operations while reducing the technical specifications of the machine. In this PhD project, you will explore a way to implement non-local interactions in silicon-based quantum computers using coherent spin-photon interactions. For the spin qubits, you will use CMOS-based quantum devices due to their compatibility with VLSI fabrication processes. Your task will be to develop microwave single-photon circuits to establish resonant microwave-mediated interactions between distant spins in spatially separated silicon devices. A positive outcome of this project will facilitate the development of silicon-based quantum processors and establish links between different cores to run parallel quantum computing algorithms.