Measuring the entanglement of bipartite pure states
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چکیده
The problem of the experimental determination of the amount of entanglement of a bipartite pure state is addressed. We show that measuring a single observable does not suffice to determine the entanglement of a given unknown pure state of two particles. Possible minimal local measuring strategies are discussed and a comparison is made on the basis of their best achievable precision. PACS-numbers: 03.67.-a, 03.65.Bz Typeset using REVTEX
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تاریخ انتشار 1999