Additivity of the entanglement of formation
Abstract
We address the question of whether the entanglement of formation is additive over tensor products of full matrix algebras, and derive a necessary and sufficient condition for optimality of vector states. By discussing two particular cases, we suggest that such a condition may be used either to prove or to find a counterexample to additivity.
- Publication:
-
Physical Review A
- Pub Date:
- April 2001
- DOI:
- 10.1103/PhysRevA.63.042306
- arXiv:
- arXiv:quant-ph/0005126
- Bibcode:
- 2001PhRvA..63d2306B
- Keywords:
-
- 03.67.-a;
- Quantum information;
- Quantum Physics;
- Mathematical Physics
- E-Print:
- 4 pages, Latex, doublecolumn