The paper presents the realization of a dual-species Rydberg array using rubidium (Rb) and cesium (Cs) atoms, exploring new regimes of interactions and dynamics not accessible in single-species architectures. By electrically tuning the Rydberg states close to a Förster resonance, enhanced interspecies interactions are achieved, enabling Rydberg blockade and quantum state transfer between the two species. The authors demonstrate the generation of a Bell state between Rb and Cs hyperfine qubits via an interspecies controlled-phase gate and achieve quantum non-demolition measurement of a Rb qubit using an auxiliary Cs qubit. This work paves the way for scalable measurement-based protocols and real-time feedback control in large-scale quantum systems, addressing challenges such as midcircuit readout and continuous replenishment of atoms in large arrays. The techniques demonstrated include the use of interspecies Förster resonance for long-range interactions, tunable intra/intra-species interaction asymmetry, and the ability to modify qubit connectivity and implement multi-qubit gates.The paper presents the realization of a dual-species Rydberg array using rubidium (Rb) and cesium (Cs) atoms, exploring new regimes of interactions and dynamics not accessible in single-species architectures. By electrically tuning the Rydberg states close to a Förster resonance, enhanced interspecies interactions are achieved, enabling Rydberg blockade and quantum state transfer between the two species. The authors demonstrate the generation of a Bell state between Rb and Cs hyperfine qubits via an interspecies controlled-phase gate and achieve quantum non-demolition measurement of a Rb qubit using an auxiliary Cs qubit. This work paves the way for scalable measurement-based protocols and real-time feedback control in large-scale quantum systems, addressing challenges such as midcircuit readout and continuous replenishment of atoms in large arrays. The techniques demonstrated include the use of interspecies Förster resonance for long-range interactions, tunable intra/intra-species interaction asymmetry, and the ability to modify qubit connectivity and implement multi-qubit gates.