Quantum Error Correction — Repetition Code

3-qubit bit-flip repetition code: |0⟩→|000⟩, |1⟩→|111⟩. Syndrome measurement detects but doesn't reveal logical state. Logical error rate p_L = 3p²−2p³ vs physical error rate p.

Physical error rate p 0.100

Code distance d 3

N shots (simulation) 1000

Set parameters and run simulation.