The Spectrum and Separability of Mixed Two-Qubit X-States
The separable mixed two-qubit X -states are classified in accordance with the degeneracies in the spectrum of density matrices. It is shown that there are four classes of separable X -states, among them: one four-dimensional family, a pair of two-dimensional families, and a single zero-dimensional m...
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| Veröffentlicht in: | Journal of mathematical sciences (New York, N.Y.) N.Y.), 2017-07, Vol.224 (2), p.349-359 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
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| Online-Zugang: | Volltext |
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| Zusammenfassung: | The separable mixed two-qubit
X
-states are classified in accordance with the degeneracies in the spectrum of density matrices. It is shown that there are four classes of separable
X
-states, among them: one four-dimensional family, a pair of two-dimensional families, and a single zero-dimensional maximally mixed state. |
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| ISSN: | 1072-3374 1573-8795 |
| DOI: | 10.1007/s10958-017-3421-5 |