Quantum redundancy refers to the principle of encoding quantum information in a way that protects it against errors and loss. This concept is crucial in quantum computing and quantum algorithms, as it helps maintain the integrity of qubits during computation and transmission, similar to error-correcting codes in classical information theory. By using multiple physical qubits to represent a single logical qubit, quantum redundancy ensures that even if some qubits are affected by noise or other disturbances, the overall information can still be recovered.
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