From perfect to fractal transmission in spin chains

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dc.creatorDe Chiara, Gabriele
dc.creatorRossini, Davide
dc.creatorMontangero, Simone
dc.creatorFazio, Rosario
dc.date2005-02-23
dc.date2005-07-22
dc.date.accessioned2026-07-07T06:12:13Z
dc.date.available2026-07-07T06:12:13Z
dc.descriptionPerfect state transfer is possible in modulated spin chains, imperfections however are likely to corrupt the state transfer. We study the robustness of this quantum communication protocol in the presence of disorder both in the exchange couplings between the spins and in the local magnetic field. The degradation of the fidelity can be suitably expressed, as a function of the level of imperfection and the length of the chain, in a scaling form. In addition the time signal of fidelity becomes fractal. We further characterize the state transfer by analyzing the spectral properties of the Hamiltonian of the spin chain.
dc.description8 pages, 10 figures, published version
dc.identifierhttps://arxiv.org/abs/quant-ph/0502148
dc.identifierhttp://arxiv.org/abs/quant-ph/0502148
dc.identifierPhys. Rev. A 72, 012323 (2005)
dc.identifierdoi:10.1103/PhysRevA.72.012323
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/92720
dc.subjectQuantum Physics
dc.subjectOther Condensed Matter
dc.titleFrom perfect to fractal transmission in spin chains
dc.typetext

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