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Abstract: We consider the near-resonant interaction between a single atom and a focusedlight mode, where a single atom localized at the focus of a lens can scatter asignificant fraction of light. Complementary to previous experiments onextinction and phase shift effects of a single atom, we report here on themeasurement of coherently backscattered light. The strength of the observedeffect suggests combining strong focusing with the well-established methods ofcavity QED. We consider theoretically a nearly concentric cavity, which shouldallow for a strongly focused optical mode. Simple estimates show that in a suchcase one can expect a significant single photon Rabi frequency. This opens newperspectives and a possibility to scale up the system consisting of manyatom+cavity nodes for quantum networking due to a significant technicalsimplification of the atom-light interfaces.



Autor: Syed Abdullah Aljunid, Brenda Chng, Martin Paesold, Gleb Maslennikov, Christian Kurtsiefer

Fuente: https://arxiv.org/



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