Abstract
We generalize the definition of strong positive partial transpose (SPPT) to the multipartite system. The tripartite case was first considered by Yu and Zhao [Int. J. Theor. Phys. 54, 292 (2014)]. In this extension, unfortunately, desired properties such as the PPT of SPPT states and the separability of super and pure SPPT states are not preserved. In contrast, this paper provides an alternative generalization to multipartite cases with these properties preserved. We also provide sufficient conditions for the separability of SPPT states.
- Received 30 April 2018
DOI:https://doi.org/10.1103/PhysRevA.98.012307
©2018 American Physical Society
Physics Subject Headings (PhySH)
Quantum Information, Science & Technology