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Volumn 72, Issue 5, 2005, Pages

Economical quantum cloning in any dimension

Author keywords

[No Author keywords available]

Indexed keywords

CLONING MACHINES; D-DIMENSIONAL QUANTUM SYSTEM; QUBITS;

EID: 28844457004     PISSN: 10502947     EISSN: 10941622     Source Type: Journal    
DOI: 10.1103/PhysRevA.72.052322     Document Type: Article
Times cited : (55)

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    • The deep reason for the appearance of Bell states in the formalism of cloning machines is the invariance with respect to the discrete Weyl-Heisenberg group (see G. Chiribella, G. M. DâAriano, P. Perinotti, and N. J. Cerf, quant-ph/0507130). In a paper in preparation, the role of a cyclic subgroup of this group will be analyzed in details. It will be shown that some restrictive assumptions must be made about the optimality of the cloner (see also Ref.).
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