Abstract
We write the optimal pure-state decomposition of any two-mode Gaussian state and show that its entanglement of formation coincides with the Gaussian one. This enables us to develop an insightful approach of evaluating the exact entanglement of formation. Its additivity is finally proven.
- Received 1 September 2008
DOI:https://doi.org/10.1103/PhysRevLett.101.220403
©2008 American Physical Society
