Concurrence-based entanglement measure for Werner States
Chen, K, Albeverio, S, Fei, S M · CERN Document Server (European Organization for Nuclear Research) · 2007
We give explicit expressions for entanglement measures of Werner states in arbitrary dimensions in terms of concurrence and tangle. We show that an optimal ensemble decomposition for a joint density matrix of a Werner state can achieve the minimum average concurrence and tangle simultaneously. Furthermore, the same decomposition also attains entanglement of formation for Werner states.