Coherent manipulation of interacting electron qubits on solid neon

Solid neon has recently emerged as a pristine material host for electron qubits. Single electron-on-solid-neon (eNe) charge qubits have shown extraordinarily long coherence times and high operation fidelities. Realizing two-qubit gates in this platform is the next major step for practical quantum information processing. In this work, we demonstrate frequency- and time-domain coherent manipulation of multiple eNe charge qubits that are coupled by charge-charge interactions. Cross-resonance and bSWAP two-qubit gates are implemented, laying the foundation for universal quantum computing. Inter-qubit coupling strength exceeding 60~MHz is observed, promising fast and high-fidelity two-qubit gates. These results highlight the potential to develop the eNe qubit platform into a compelling quantum computing architecture.