Towards a quantum Internet with single atoms in cavities

IQC Special Seminar - Olivier Morin, MAX PLANCK INSTITUTE OF QUANTUM OPTICS

Building a quantum internet requires to develop computing machines but also to connect them at various scales, e.g. via optical fibres. Although it is not yet known which physical platforms are suitable for this challenge, there is a consensus to say that light-matter interface will play an important role. As it turns out, a single atom in an optical cavity offers this feature as any photon in the cavity will strongly interact with the coupled atom. Because of its versatility, this platform has demonstrated its suitability in numerous elementary quantum information tasks, for instance quantum memory or quantum gate, to name the most important ones. Recently, a new era is starting for this platform: the building block capabilities can be combined to realize useful quantum information protocols. I will illustrate this with our recent works, such as a quantum gate through a network, a quantum repeater node, or the generation of large graph states.

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