In many theoretical proposals appeared recently, semidefinite programming was considered as a way to express quantum entanglement. Using semidefinite optimization method, we prove the Lewenstein–Sanpera lemma in a simple elegant manner. Particularly, using this method we obtain Lewenstein–Sanpera decomposition for some examples such as: generic two qubit state in Wootters’s basis, Iso-concurrence state, Bell decomposable state and 2 ⊗ 3 Bell decomposable state.
Quantum Information Processing – Springer Journals
Published: Apr 27, 2005
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