Raphaël Van Laer, Kvantteknologi

Sammanfattning: 

Much of today’s information infrastructure is based on incoherent excitations like the electrons in transistors. Devices leveraging coherent phenomena such as wave interference and quantum entanglement may enable new categories of computation, sensing, and communication. Yet coherent systems like photonic integrated circuits and quantum processors face challenging scaling barriers and remain largely unexplored in comparison with transistor technology.
In this lecture, I will describe our team’s efforts to discover and develop new hardware and applications in this space. We aim to do so by combining the strengths of microwave, acoustic, and optical systems. I will focus on two examples of our mission in quantum technology: (1) quantum interconnects between microwaves and optics and (2) compact GHz-frequency acoustic resonators storing quantum information. In each case I will outline the background, state of the art, and our team’s initial contributions to inventing and using such hardware – from the development of thermally anchored optomechanical crystals (link) to a proposal merging superconducting microwave and optical quantum architectures. These are our first steps towards understanding overarching questions such as: what are the limits to information processing under constrained space and energy? Can we build large-scale and useful coherent information processing devices?

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