Physics – Quantum Physics
Scientific paper
1997-07-22
Phys.Rev.Lett. 80 (1998) 2261-2264
Physics
Quantum Physics
4 pages Latex, 1 figure
Scientific paper
10.1103/PhysRevLett.80.2261
We provide a constructive algorithm to find the best separable approximation
to an arbitrary density matrix of a composite quantum system of finite
dimensions. The method leads to a condition of separability and to a measure of
entanglement.
Lewenstein Maciej
Sanpera Anna
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