Quantum error correction that never stops
Two surface code patches, each encoding one logical qubit across 9 physical qubits. X and Z stabilizers continuously measure parity, catching errors before they corrupt information. Click to trigger lattice surgery: patches merge by adding intermediate qubits and extending stabilizers, then split into two entangled logical qubits. The breakthrough: error correction continues throughout the operation, never pausing protection to compute.
Based on ETH Zurich (Feb 2026) — first demonstration of lattice surgery on superconducting qubits. 17 physical qubits per logical qubit, stabilizers measured every 1.66 microseconds.
Click/Space: Merge or split patches · R: Reset · Right-click: Change palette · P: Pause