Multi-qubit entanglement on a dual-species array of sodium and cesium Rydberg atoms

Optical tweezer arrays of neutral atoms have proven to be a versatile platform for quantum science due to their precise controllability, flexible geometries, strong interactions mediated by Rydberg states, and scalability to high atom numbers. Dual-species arrays complement and extend these capabilities by incorporating two distinct atomic species, offering greater tunability of interatomic interactions and novel possibilities for local control and readout. Here, we demonstrate two-dimensional arbitrary-geometry tweezer arrays of sodium (23Na) and cesium (133Cs) atoms with coherent excitation to Rydberg states of each species. We encode qubits in the hyperfine m=0 clock states of each species and perform interspecies entangling operations. We demonstrate progress towards nondestructive stabilizer measurement by accumulating a phase on a single ancilla Cs atom which depends on the hyperfine state of multiple neighboring data Na atoms. Readout of the Cs state infers the number of neighboring Na atoms in the hyperfine |1> state. This work opens the door to quantum error correction via stabilizer codes on dual-species platforms and showcases their utility as highly-tunable systems for quantum simulation.