If the noise operators commute with the signal Hamiltonian and a specific linear equation admits a solution, an ancilla-free autonomous QEC scheme restores Heisenberg scaling with error O(kappa T / R^c).
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Restoring Heisenberg scaling in time via autonomous quantum error correction
If the noise operators commute with the signal Hamiltonian and a specific linear equation admits a solution, an ancilla-free autonomous QEC scheme restores Heisenberg scaling with error O(kappa T / R^c).