A correlated-noise correction protocol preserves stored quantum Fisher information for dephasing and bit-flip noise, but its claimed protection against amplitude-damping noise is incorrect.
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Preserving Heisenberg-Limited Metrological Information during Storage via Correlated-Noise Correction
A correlated-noise correction protocol preserves stored quantum Fisher information for dephasing and bit-flip noise, but its claimed protection against amplitude-damping noise is incorrect.