Mixed State Entanglement Measures for Intermediate Separability
- Author(s)
- Tsubasa Ichikawa, Marcus Huber, Philipp Krammer, Beatrix Hiesmayr
- Abstract
To determine whether a given multipartite quantum state is separable with respect to some partition, we construct a family of entanglement measures {Rm(?)}. This is done utilizing generalized concurrences as building blocks which are defined by flipping of M constituents and indicate states that are separable with regard to bipartitions when vanishing. Furthermore, we provide an analytically computable lower bound for {Rm(?)} via a simple ordering relation of the convex roof extension. Using the derived lower bound, we illustrate the effect of the isotropic noise on a family of four-qubit mixed states for each intermediate separability.
- Organisation(s)
- Particle Physics
- External organisation(s)
- Kinki University
- Journal
- International Journal of Quantum Information (IJQI)
- Volume
- 8
- Pages
- 677-685
- No. of pages
- 9
- ISSN
- 0219-7499
- DOI
- https://doi.org/10.1142/S0219749910006526
- Publication date
- 2010
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103036 Theoretical physics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/mixed-state-entanglement-measures-for-intermediate-separability(9c73ddb9-b9f6-4524-b941-6c95edb31cd3).html