Fidelity of Single Qubit Maps

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We describe a simple way of characterizing the average fidelity between a unitary (or anti-unitary) operator and a general operation on a single qubit, which only involves calculating the fidelities for a few pure input states, and discuss possible applications to experimental techniques including Nuclear Magnetic Resonance (NMR).
5 pages RevTex4, no figures. Physics Letters A in press. Supersedes quant-ph/0103090 and quant-ph/0103060

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Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/89989

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/quant-ph/0201106
 http://arxiv.org/abs/quant-ph/0201106
 Phys. Lett. A 294, 258 (2002)
 doi:10.1016/S0375-9601(02)00069-5

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arXiv