A SWAP-test purification protocol that estimates observables of ρ^N from noisy copies without postselection; the claimed mid-circuit quantum error correction is not established because no physical purified state is produced.
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Hybrid Quantum Error Correction and Mitigation by Purification
A SWAP-test purification protocol that estimates observables of ρ^N from noisy copies without postselection; the claimed mid-circuit quantum error correction is not established because no physical purified state is produced.