Separability of two-qubit state in terms of local invariants

Separability of two-qubit state in terms of local invariants

The separability condition for the two-qubit mixed state is formulated in terms of a system of inequalities in invariants of the adjoint SU (2) ⊗ SU (2) action on the space of density matrices, i.e., positive semidefinite 4 × 4 Hermitian matrices.

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Veröffentlicht in:Physics of particles and nuclei letters 2011-09, Vol.8 (5), p.451-454
Hauptverfasser: Gerdt, V. P., Palii, Yu. G., Khvedelidze, A. M.
Format: Artikel
Sprache:eng
Schlagworte:
Particle and Nuclear Physics
Physics
Physics and Astronomy
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Zusammenfassung:The separability condition for the two-qubit mixed state is formulated in terms of a system of inequalities in invariants of the adjoint SU (2) ⊗ SU (2) action on the space of density matrices, i.e., positive semidefinite 4 × 4 Hermitian matrices.
ISSN:1547-4771
1531-8567
DOI:10.1134/S1547477111050074