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Extended Single-Atom Tweezer Arrays in High-Cooperativity Cavity-QED

Thomas Picot, Clément Raphin, Marcel Kern, Pierre-Antoine Bourdel, Théo Ahamdach, Jakob Reichel, Romain Long

quant-pharXiv:2607.21515

Abstract

A central challenge for cavity-QED-based quantum technologies is to make high-cooperativity optical interfaces compatible with site-resolved arrays of single atoms. Here, we demonstrate optical tweezer arrays of individual 87Rb atoms inside a fiber Fabry-Perot microcavity with single-atom cooperativity C 90. We combine background-free site-resolved fluorescence imaging of extended arrays with collective coupling to a common cavity mode for arrays with a mean atom number up to N 36. These results establish a high-cooperativity platform for many-body cavity-QED with site-resolved detection and control.

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