Programmable cavity QED with a fiber-integrated atomic array

• URL: http://arxiv.org/abs/2608.20291v1
• Date: Thu, 20 Aug 2026 17:32:41 GMT
• Title: Programmable cavity QED with a fiber-integrated atomic array
• Abstract summary: We combine a twelve-site $87$Rb optical tweezer array with a high-cooperativity fiber Fabry-Pérot microcavity.<n>For up to five atoms coupled to the cavity, we measure collectively enhanced vacuum Rabi splitting.<n>Results establish a scalable architecture for cavity-mediated entanglement generation and many-body cavity QED with single-atom control.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Strong atom-photon interactions in optical cavities are a key resource for quantum information processing, quantum networking, and the exploration of quantum optical effects. Optical tweezer arrays offer scalable, site-resolved control of neutral atoms, but their integration with high-cooperativity cavity QED systems remains challenging. Here we combine a twelve-site $^{87}$Rb optical tweezer array with a high-cooperativity fiber Fabry-Pérot microcavity. The array is positioned within the cavity mode and individual sites are controlled with subwavelength precision, enabling continuous tuning of the single-atom coupling strength via deterministic displacement through the standing-wave field. For up to five atoms coupled to the cavity, we measure collectively enhanced vacuum Rabi splitting and implement cavity-based non-destructive readout of the number of coupled atoms. These results establish a scalable architecture for cavity-mediated entanglement generation and many-body cavity QED with single-atom control, and they lay the foundation for fiber-integrated quantum network nodes.

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