A Characterization of Maximally Entangled Two-Qubit States.
Entropy (Basel)
; 24(2)2022 Feb 07.
Article
em En
| MEDLINE
| ID: mdl-35205540
ABSTRACT
As already known by Rana's result, all eigenvalues of any partial-transposed bipartite state fall within the closed interval [-12,1]. In this note, we study a family of bipartite quantum states where the minimal eigenvalues of partial-transposed states are -12. For a two-qubit system, we find that the minimal eigenvalue of its partial-transposed state is -12 if and only if such a two-qubit state is maximally entangled. However this result does not hold in general for a two-qudit system when the dimensions of the underlying space are larger than two.
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Base de dados:
MEDLINE
Idioma:
En
Revista:
Entropy (Basel)
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
China