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MiS Preprint

Local Unitary Invariants for Multipartite Quantum Systems

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


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.

Sep 15, 2014
Oct 6, 2014
03.67.-a, 02.20.Hj, 03.65.-w

Related publications

2014 Repository Open Access
Jing Wang, Ming Li, Shao-Ming Fei and Xianqing Li-Jost

Local unitary invariants for multipartite quantum systems

In: Communications in theoretical physics, 62 (2014) 5, pp. 673-676