Quantum Error Correction Progress on IBM Processors Detailed

VERA Brief

AI-generated. Grounded in the article and its cited sources.

Researchers from USC and Quantum Elements have demonstrated progress in surface code scaling for quantum error correction using IBM's Heavy-Hex processors. This work addresses connectivity challenges and validates error suppression on non-native qubit geometries.

Key facts

• USC and Quantum Elements demonstrated subthreshold surface code scaling on IBM Heavy-Hex processors.
• Connectivity limitations were overcome using a "fold-unfold" SWAP embedding strategy and robust dynamical decoupling.
• The demonstration validates that physical quantum processors can achieve distance-scaling error suppression on non-native qubit geometries.
• A SPAM-aware Entanglement Fidelity metric was introduced to assess logical error rates.
• The research involved 156-qubit IBM Heron processors.