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Open Access item Creation and manipulation of entanglement in spin chains far from equilibrium

Authors:Galve, Fernando
Zueco, David
Reuther, Georg M.
Kohler, Sigmund
Hänggi, Peter
Issue Date:2010
Publisher:Springer
Citation:European Physical Journal - Special Topics 180(1): 237-246 (2010)
Abstract:We investigate creation, manipulation, and steering of entanglement in spin chains from the viewpoint of quantum communication between distant parties. We demonstrate how global parametric driving of the spin-spin coupling and/or local time-dependent Zeeman fields produce a large amount of entanglement between the first and the last spin of the chain. This occurs whenever the driving frequency meets a resonance condition, identified as "entanglement resonance". Our approach marks a promising step towards an efficient quantum state transfer or teleportation in solid state system. Following the reasoning of Zueco et al. [1], we propose generation and routing of multipartite entangled states by use of symmetric tree-like structures of spin chains. Furthermore, we study the effect of decoherence on the resulting spin entanglement between the corresponding terminal spins.
Description:10 páginas, 6 figuras.-- El pdf del artículo es la versión pre-print: arXiv:1003.4846v1
Publisher version (URL):http://dx.doi.org/0.1140/epjst/e2010-01220-5
URI:http://hdl.handle.net/10261/44820
ISSN:1951-6355
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