Quantum information science with dual species atom arrays

Quantum computing with neutral atom qubits has advanced rapidly with the development of large 2D arrays and high fidelity entangling gates. Demonstrations of variational algorithms with physical qubits and d=2, error detecting logical qubits will be presented. Dual species arrays provide an efficient solution for implementing error corrected logical qubits with fast mid-circuit measurements. We demonstrate interleaved trapping of Rb and Cs atoms, and inter-species entanglement with a time optimal Rydberg gate. Progress towards logical qubits and repeated rounds of error syndrome extraction will be described. In addition to computation the dual species approach provides a convenient separation of functionalitiies for quantum networking and sensing. We are implementing a dual species array with optical interfaces that uses Rb atoms for atom-photon entanglment and Cs atoms as memory and logic qubits. Progress towards hybrid entanglement in this architecture will be presented.