One-way deficit of SU(2) invariant states
Quantum Physics
2015-02-16 v1
Abstract
We calculate analytically the one-way deficit for systems consisting spin- and spin- subsystems with SU(2) symmetry. Comparing our results with the quantum discord of SU(2) invariant states, we show that the one-way deficit is equal to the quantum discord for half-integer , and is larger than the quantum discord for integer . Moreover, we also compare the one-way deficit with entanglement of formation. The quantum entanglement tends to zero as increases, while the one-way deficit can remain significantly large.
Keywords
Cite
@article{arxiv.1307.3468,
title = {One-way deficit of SU(2) invariant states},
author = {Yao-Kun Wang and Teng Ma and Shao-Ming Fei and Zhi-Xi Wang},
journal= {arXiv preprint arXiv:1307.3468},
year = {2015}
}
Comments
10 pages, 6 figures