1212.5851 (Yu Guo et al.)
Yu Guo, Heng Fan
Positive maps are useful for detecting entanglement in quantum information theory. Any entangled state can be detected by some positive map. In this paper, the relation between positive block matrices and completely positive trace-preserving maps is characterized, from which a new method for constructing decomposable maps is derived. In addition, a method for constructing positive maps from Hermitian block matrices is also obtained.
View original:
http://arxiv.org/abs/1212.5851
No comments:
Post a Comment