A note on state decomposition independent local invariants

作者:Zhang, Ting-Gui*; Jing, Naihuan; Li-Jost, Xianqing; Zhao, Ming-Jing; Fei, Shao-Ming
来源:European Physical Journal D, 2013, 67(8): 175.
DOI:10.1140/epjd/e2013-40068-7

摘要

We derive a set of invariants under local unitary transformations for arbitrary dimensional quantum systems. These invariants are given by hyperdeterminants and independent from the detailed pure state decompositions of a given quantum state. They also give rise to necessary conditions for the equivalence of quantum states under local unitary transformations.