QECCs typically rely on a combination of entanglement and redundancy. They encode quantum information into a larger system of qubits in such a way that even if some qubits experience errors, the overall state can still be recovered. The process involves several steps:
Encoding: The quantum state is encoded into a larger Hilbert space using an encoding circuit. Detection: Any errors in the encoded state are detected using syndrome measurements. Correction: Once detected, these errors can be corrected using appropriate quantum gates.
