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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.

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