Purcell-Engineered Hybrid Coupler for Leakage-Suppressed Robust CZ Gates

arXiv:2607.23463 · quant-ph · Submitted 2026-07-26 · Read on arXiv

quant-ph

Submitted: 2026-07-26

Updated: 2026-10-09

Terminology

• Fidelity — 50× in this paper · explained in 2 episodes
• Robustness — 18× in this paper · explained in 5 episodes
• Hilbert Space — 3× in this paper · explained in 2 episodes
• Calibration — 2× in this paper · explained in 7 episodes
• Hybrid Architectures — 2× in this paper · explained in 3 episodes
• Local Optimization — 2× in this paper · explained in 2 episodes
• Quantum Circuits — 2× in this paper · explained in 2 episodes
• Entanglement — 1× in this paper · explained in 4 episodes
• Lindblad master equation — 1× in this paper · explained in 2 episodes
• Quantum sensing — 1× in this paper · explained in 2 episodes
• Transmon Qubit — 1× in this paper · explained in 2 episodes

Sources

• Control the qubit-qubit coupling with double superconducting resonators
• High-fidelity gates in a transmon using bath engineering for passive leakage reset

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