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2. Light-matter interaction
Behind the very fundamental processes of light-matter interaction, such as absorption, stimulated or spontaneous emission, lies a solid toolbox for controlling and manipulating quantum information.
Light is indeed a tool of choice for interrogating matter, both for historical reasons - spectroscopy was essential to understanding the atom - and much more recently, thanks to advances in laser technology.
Electromagnetic radiation shows its two complementary facets in the field of quantum information. On the one hand, laser radiation is used as an ideal and versatile tool for manipulating atomic qubits. On the other, the photon can be the direct carrier of the information we wish to inscribe in matter. This transfer of quantum states corresponds to the conversion of a photonic qubit into an atomic qubit....
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• QUREP: European project to develop a quantum repeater http://www.quantumrepeaters.eu/
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