Convex-roof extended negativity as an entanglement measure for bipartite quantum systems
By Soojoon Lee, D. Chi, S. Oh, Jaewan Kim. 2003
169 citations recorded by the source corpus.
We extend the concept of negativity, a good measure of entanglement for bipartite pure states, to mixed states by means of the convex-roof extension. We show that the measure does not increase under local quantum operations and classical communication, and derive explicit formulas for the entanglement measure of isotropic states and Werner states, applying the formalism presented by Vollbrecht and Werner [Phys. Rev. A 64, 062307 (2001)].
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/ec12f696e372c889b42518b364bced046c594f33
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In Artificial Intelligence
In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Geometry of Quantum States: Index (2007, background): “For instance, the convex roof extended negativity [582] and concurrence of formation [982, 783, 663] are related to E1/2 and E2, respectively.”