Quantum cloning of orthogonal qubits
An optimal universal cloning transformation is derived that produces M copies of an unknown qubit from a pair of orthogonal qubits. For M>6, the corresponding cloning fidelity is higher than that of the optimal copying of a pair of identical qubits.
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| Veröffentlicht in: | Fortschritte der Physik 2003-03, Vol.51 (2-3), p.117-121 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | An optimal universal cloning transformation is derived that produces M copies of an unknown qubit from a pair of orthogonal qubits. For M>6, the corresponding cloning fidelity is higher than that of the optimal copying of a pair of identical qubits. |
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| ISSN: | 0015-8208 1521-3978 |
| DOI: | 10.1002/prop.200310013 |