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Quantum cloning of orthogonal qubits
Author(s) -
Fiurášek J.,
Iblisdir S.,
Massar S.,
Cerf N.J.
Publication year - 2003
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/prop.200310013
Subject(s) - qubit , quantum cloning , cloning (programming) , transformation (genetics) , copying , fidelity , physics , quantum mechanics , quantum , genetics , computer science , biology , quantum error correction , telecommunications , gene , programming language
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.