Ri Qu, Yi-ping Ma, Yan-ru Bao, Juan Wang, Zong-shang Li
We investigate some properties of the entanglement of hypergraph states in purely hypergraph theoretical terms. We first introduce an approach for computing local entropic measure on qubit t of a hypergraph state by using the Hamming weight of the so-called t-adjacent subhypergraph. Then we quantify and characterize the entanglement of hypergraph states in terms of local entropic measures obtained by using the above approach. Our results show that a class of n-qubit hypergraph states can not be converted into any graph state under local unitary transformations.
View original:
http://arxiv.org/abs/1305.0662
No comments:
Post a Comment