No ‘second law of entanglement’ after all, claims study

Irreversibility of entanglement manipulation. Our main result in Theorem 1 shows that the two-qutrit state ω3 cannot be reversibly manipulated under NE transformations. We can extract only log 2 (3/2)≉7/12Entanglement bits per copy of ω 3 asymptotically, but one full entanglements bit per copy is needed to generate it.

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