Preprint 97/2014

Local Unitary Invariants for Multipartite Quantum Systems

Jing Wang, Ming Li, Shao-Ming Fei, and Xianqing Li-Jost

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Submission date: 15. Sep. 2014
Pages: 9
published in: Communications in theoretical physics, 62 (2014) 5, p. 673-676 
DOI number (of the published article): 10.1088/0253-6102/62/5/07
PACS-Numbers: 03.67.-a, 02.20.Hj, 03.65.-w
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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.

03.07.2017, 01:42