Temporal noise constant within Floquet periods creates decoherence-free subspaces in bulk states of photonic quantum walks but destroys coherence in random noise cases and in topological edge states, as derived via a non-perturbative master equation and confirmed in a fiber-ring experiment.
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Decoherence-free subspaces in the noisy dynamics of discrete-step quantum walks in a photonic lattice
Temporal noise constant within Floquet periods creates decoherence-free subspaces in bulk states of photonic quantum walks but destroys coherence in random noise cases and in topological edge states, as derived via a non-perturbative master equation and confirmed in a fiber-ring experiment.