Creation and manipulation of entanglement in spin chains far from equilibrium
| Autor: | Galve, F., Zueco, D., Reuther, G. M., Kohler, S., Hänggi, P. |
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| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Eur. J. Phys. - ST (Special Topics) v 180, 237-246 (2010) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1140/epjst/e2010-01220-5 |
| Popis: | 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. Comment: 10 pages, 8 figures |
| Databáze: | arXiv |
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