Experimental Determination of Entanglement for Arbitrary Pure States

Details Experimental Determination of Entanglement for Arbitrary Pure States Experimental Determination of Entanglement for Arbitrary Pure States

2009-09-26

arxiv.org/abs/0909.4851v1

PhysRevA.80.032320(2009)

Physics

Quantum Physics

6 pages

Scientific paper

We present a way of experimentally determining the concurrence in terms of the expectation values of local observables for arbitrary multipartite pure states. In stead of the joint measurements on two copies of a state in the experiment for two-qubit systems [S. P. Walborn et al. Nature (London)440, 20(2006)], we only need one copy of the state in every measurement for any arbitrary dimensional multipartite systems, avoiding the preparation of twin states or the imperfect copy of the state.

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