Researchers Propose Robust Control Boosting Cat-Qubit Fidelity

Engineering dissipation and control pulses for high-fidelity fault-tolerance quantum computing Until now, maintaining coherence in leading qubit designs has meant choosing between fast operation or resilience to error. New protocols achieve both simultaneously within cat-state qubits via engineered two-photon dissipation, suppressing errors from drive field imperfections alongside unwanted state leakage. This offers a pathway towards building dependable quantum processors with reduced information loss.