Quantum computing gate achieves 99.92% fidelity for a two-qubit device using a tunable double-transmon coupler

https://www.techexplorist.com/novel-high-fidelity-quantum-computing-gate/93259/

"also, 99.98% for single-qubit gate... enhances current noisy intermediate-scale quantum device accuracy/ reliability, moving closer to fault-tolerant quantum computation with effective error correction... suppresses noise, rapid, even with detuned qubits... machine learning enables theoretical potential, optimizing balance between leakage/ decoherence errors, determining 48 ns optimal gate length... scalable... future: shorter gate length which could help further minimize the incoherent error”

Related: Quantum Breakthrough: New Study Uncovers Hidden Behavior in Superconductors
https://scitechdaily.com/quantum-breakthrough-new-study-uncovers-hidden-behavior-in-superconductors/