The Purification of Completely Positive Maps
We generalize the concept of purification of states to completely positive maps and prove that a CP map has a purification if and only if it is orthogonality preserving.
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| Veröffentlicht in: | The Bulletin of the London Mathematical Society 1982-11, Vol.14 (6), p.545-548 |
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| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | We generalize the concept of purification of states to completely positive maps and prove that a CP map has a purification if and only if it is orthogonality preserving. |
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| ISSN: | 0024-6093 1469-2120 |
| DOI: | 10.1112/blms/14.6.545 |