Lower bounds on concurrence and negativity from a trace inequality
Quantum Physics
2020-08-05 v1
Abstract
For bipartite quantum states we obtain lower bounds on two important entanglement measures, concurrence and negativity, studying the inequalities for the expectation value of a projector on some subspace of the Hilbert space. Several applications, including analysis of stability of entanglement under various perturbations of a state, are discussed.
Cite
@article{arxiv.2005.01881,
title = {Lower bounds on concurrence and negativity from a trace inequality},
author = {K. V. Antipin},
journal= {arXiv preprint arXiv:2005.01881},
year = {2020}
}
Comments
14 pages