arXiv:0909.5152 [quant-ph]AbstractReferencesReviewsResources
Local unitary equivalence of multipartite pure states
Published 2009-09-28Version 1
Necessary and sufficient conditions for the equivalence of arbitrary n-qubit pure quantum states under Local Unitary (LU) operations are derived. First, an easily computable standard form for multipartite states is introduced. Two generic states are shown to be LU-equivalent iff their standard forms coincide. The LU-equivalence problem for non--generic states is solved by presenting a systematic method to determine the LU operators (if they exist) which interconvert the two states.
Comments: 5 pages
Journal: Phys. Rev. Lett. 104, 020504 (2010)
Categories: quant-ph
Keywords: multipartite pure states, local unitary equivalence, arbitrary n-qubit pure quantum states, standard forms coincide, multipartite states
Tags: journal article
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