Local state antimarking: Nonlocality without entanglement
The research introduces local state antimarking (LSAM), a new framework for quantifying quantum nonlocality that doesn't require entanglement. It unifies local state antidistinguishability (LSAD) and marking into this task, revealing a more refined metric. LSAM can distinguish between ensembles that appear identical under other measures, providing a deeper characterization of nonlocality.