Abstract
We show that three conditions associated with “entanglement,”viz., non-locality, non-factorisability and statistical dependence, are equivalent for pure states, and that non-factorisability and statistical dependence are equivalent for mixed states. Discussion then reinforces the generally held view that the key condition for mixed states is nonseparability.
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Clarke, C.J.S. Entanglement and statistical independence for mixed quantum states. Found Phys Lett 15, 495–500 (2002). https://doi.org/10.1023/A:1023924331504
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DOI: https://doi.org/10.1023/A:1023924331504