A high-cooperativity cQED platform using a fiber cavity and individual atoms in tweezers

Neutral atom quantum processors can greatly benefit from integration with optical cavities. These optical interfaces can be used for fast readout for real time error detection and as a quantum networking node to entangle distant quantum processors. Here we present one candidate for such integration: a Fabry-Perot Fiber Cavity (FPFC). This system is compatible with optical tweezer arrays and enables strong coupling of multiple atoms with a single cavity mode. We cool and trap single atoms in optical tweezers above the FPFC and transport them into the cavity mode where we measure a single atom cooperativity of up to 75. We explore the capabilities of the platform with single and two-atom experiments, paving the way for integration of FPFCs with atom arrays for quantum computation, simulation, and networking protocols.