

Preprint 49/2009
Experimental Determination of Entanglement for Arbitrary Pure States
Shao-Ming Fei, Ming-Jing Zhao, Kai Chen, and Zhi-Xi Wang
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Submission date: 17. Aug. 2009
Pages: 7
published in: Physical review / A, 80 (2009) 3, art-no. 032320
DOI number (of the published article): 10.1103/PhysRevA.80.032320
Bibtex
PACS-Numbers: 03.65.Ud, 03.67.Mn, 42.50.-p
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Abstract:
We present a way of experimental
determination of concurrence in terms
of the expectation value of local observables for
arbitrary multipartite pure states.
In stead of joint measurements on two-copy states needed in the experiment
[Nature 440, 20(2006)]
for two-qubit systems, we need only measurements on one-copy state in every single measurement
for any arbitrary dimensional multipartite states, which
avoids the preparation of twin states or the imperfect copy of pure states.