Local unitary classification of arbitrary dimensional multipartite pure states

Phys Rev Lett. 2012 Feb 3;108(5):050501. doi: 10.1103/PhysRevLett.108.050501. Epub 2012 Jan 31.

Abstract

We propose a practical entanglement classification scheme for general multipartite pure states in arbitrary dimensions under local unitary equivalence by exploiting the high order singular value decomposition technique and local symmetries of the states. By virtue of this scheme, the method of determining the local unitary equivalence of n-qubit states proposed by Kraus is extended to the case for arbitrary dimensional multipartite states.