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Local Unitary Invariants for Multipartite Quantum Systems

Published 23 Oct 2014 in quant-ph | (1410.6254v1)

Abstract: We present an approach of constructing invariants under local unitary transformations for multipartite quantum systems. The invariants constructed in this way can be complement to that in [Science 340 (2013) 1205-1208]. Detailed examples are given to compute such invariant in detail. It is shown that these invariants can be used to detect the local unitary equivalence of degenerated quantum states.

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