Abstract
We present a multipartite entanglement measure for -qudit pure states, using the norm of the correlation tensor which occurs in the Bloch representation of the state. We compute this measure for an important class of -qutrit pure states, namely, general GHZ states. We prove that this measure possesses all the essential and many desirable properties expected of a good entanglement measure, including monotonicity. We also discuss the feasibility of the experimental evaluation of this measure for an -qutrit system.
- Received 13 June 2009
DOI:https://doi.org/10.1103/PhysRevA.80.042302
©2009 American Physical Society