In chiral continuous-time quantum walks with a single-site dichotomic measurement, all two-time probabilities, measurement back-action, and Leggett-Garg correlators are exactly determined by the rooted return amplitude, enabling flux-engineering of the L3=3/2 bound.
ForC6 and C10, the optimized violation varies by less than one percent over the flux range in the observation windows considered below
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Flux control of measurement back-action and Leggett-Garg correlations in chiral quantum walks
In chiral continuous-time quantum walks with a single-site dichotomic measurement, all two-time probabilities, measurement back-action, and Leggett-Garg correlators are exactly determined by the rooted return amplitude, enabling flux-engineering of the L3=3/2 bound.