Improved error correction with leakage reduction units built into qubit measurement in a superconducting quantum processor

arXiv:2511.17460 · quant-ph · Submitted 2025-11-21 · Read on arXiv

quant-ph

Submitted: 2025-11-21

Updated: 2025-11-21

Code: https://github.com/MarcSerraPeralta/data-lru-integrated-with-measurement-for-qec

Terminology

• Fidelity — 31× in this paper · explained in 2 episodes
• Post-Selection — 31× in this paper · explained in 2 episodes
• Calibration — 7× in this paper · explained in 7 episodes
• Benchmark — 4× in this paper · explained in 2 episodes
• Accuracy — 3× in this paper · explained in 1 episode
• Core — 3× in this paper · explained in 2 episodes
• Decode — 3× in this paper · explained in 2 episodes
• Benchmarking — 2× in this paper · explained in 4 episodes
• Initial Data — 2× in this paper · explained in 2 episodes
• Interleaved Randomized Benchmarking — 2× in this paper
• Adaptation — 1× in this paper · explained in 1 episode
• Entanglement — 1× in this paper · explained in 4 episodes
• Nadia — 1× in this paper · explained in 2 episodes
• Quantum Circuits — 1× in this paper · explained in 2 episodes
• Robustness — 1× in this paper · explained in 5 episodes

Sources

• Fault-Tolerant Operation of a Quantum Error-Correction Code
• Leakage Mobility in Superconducting Qubits as a Leakage Reduction Unit
• High-fidelity gates in a transmon using bath engineering for passive leakage reset
• Fast unconditional reset and leakage reduction in fixed-frequency transmon qubits
• Flexible Readout and Unconditional Reset for Superconducting Multi-Qubit Processors with Tunable Purcell Filters
• Improved iterative Bayesian unfolding
• Demonstrating real-time and low-latency quantum error correction with superconducting qubits
• Characterising the failure mechanisms of error-corrected quantum logic gates
• Importance sampling for data-driven decoding of quantum error-correcting codes

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