Fault-Tolerant Bosonic Quantum Error Correction in Hybrid Neutral-Atom Architectures

We demonstrate a fault-tolerant implementation of bosonic quantum error correction within a hybrid neutral-atom quantum computing architecture. By encoding logical qubits into continuous-variable bosonic modes and integrating real-time classical feedback loops, we experimentally suppress photon-loss and dephasing errors beyond the break-even threshold. Our platform combines optical lattice confinement with cavity-assisted entanglement generation, enabling scalable logical qubit stabilization across a two-dimensional array of neutral atoms. The hybrid quantum-classical optimization protocol dynamically adjusts syndrome extraction parameters, improving logical coherence times by a factor of 4.7 compared to unencoded qubits. These results establish a viable pathway toward scalable fault-tolerant quantum processors based on bosonic encodings and neutral-atom hardware.