Introduces Bargmann scenarios and polytopes to fully characterize and organize the witnessing power of Bargmann invariants for coherence in sets of states.
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Two quantum states ρ₁ and ρ₂ commute exactly when tr(ρ₁²ρ₂²) = tr(ρ₁ ρ₂ ρ₁ ρ₂).
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Bargmann Scenarios
Introduces Bargmann scenarios and polytopes to fully characterize and organize the witnessing power of Bargmann invariants for coherence in sets of states.
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Commutativity from a single Bargmann invariant equality
Two quantum states ρ₁ and ρ₂ commute exactly when tr(ρ₁²ρ₂²) = tr(ρ₁ ρ₂ ρ₁ ρ₂).