Surface Code

Topological quantum error correction on a 2D qubit lattice. X-stabilizers detect Z errors; Z-stabilizers detect X errors. Click qubits to inject errors.

Grid Size

Error Rate p p = 0.020

Error Type

X Errors

Z Errors

X Syndromes

Z Syndromes

X-plaquette (Z-stabilizer)

Z-plaquette (X-stabilizer)

X error on qubit

Z error on qubit

Syndrome (−1 eigenvalue)