Coherent transfer of information between distant silicon-based quantum devices

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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.