New answers tagged fault-tolerance
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It was my understanding that error-correction does not really apply to quantum computing. The elements in the set are not numbers, they are probabilities. Probability elements are never in one state or another. They are always in all states. That is the beauty of quantum computing.
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Quantum error correction concerns errors that happen on qubits; it does not provide any protection against errors in operations on those qubits.
Note however, that an error on an operation can be seen as the perfect operation plus some error 'on the qubit'. It is, however, the case that, without any precaution, the added operations introduced by error ...
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