An m-fold superposition of typical sub-maximally entangled states gains a universal ln(m) entanglement enhancement, while maximally entangled states relax to the Haar limit via N-independent scaling laws.
Us- ing the ricochet identity(M⊗I B)|Ω⟩= (I A ⊗M T)|Ω⟩, theA-side unitary can be moved to theBside,|ψ⟩= (IA ⊗V)|Ω⟩withV=U BU T A
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Typical Entanglement of Superpositions
An m-fold superposition of typical sub-maximally entangled states gains a universal ln(m) entanglement enhancement, while maximally entangled states relax to the Haar limit via N-independent scaling laws.