Surface Code QEC
Toric/surface code: physical qubits on edges, stabilizer measurements on plaquettes (Z) and vertices (X). Syndromes reveal errors without measuring qubit state.
Grid size:
5
×
5
Bit flip rate p:
0.05
Phase flip rate:
0.03
Measurement error:
0.02
Decode speed:
1
×
Step Once
Reset Code
Inject Error
Qubit (good)
X error (bit flip)
Z error (phase)
Y error (both)
Syndrome (Z stab)
Syndrome (X stab)
Correction