On Decoherence in Quantum Clock Synchronization

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We study two quantum versions of the Eddington clock-synchronization protocol in the presence of decoherence. The first protocol uses maximally entangled states to achieve the Heisenberg limit for clock synchronization. The second protocol achieves the limit without using entanglement. We show the equivalence of the two protocols under any single-qubit decoherence model that does not itself provide synchronization information.
12 Pages, 3 Figures

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Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/113192

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/quant-ph/0605013
 http://arxiv.org/abs/quant-ph/0605013
 Laser Physics, 16, 1525 (2006). Special Issue on Quantum Information and Quantum Computation.
 doi:10.1134/S1054660X06110065

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arXiv