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Effects of dissipation on an adiabatic quantum search algorithm.

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Effects of dissipation on an adiabatic quantum search algorithm.

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dc.contributor.author Vega, Inés de
dc.contributor.author Bañuls Polo, María Carmen
dc.contributor.author Pérez Cañellas, Armando
dc.date.accessioned 2014-02-20T09:34:24Z
dc.date.available 2014-02-20T09:34:24Z
dc.date.issued 2010
dc.identifier.citation Vega, Inés de Bañuls, Mari Carmen Pérez Cañellas, Armando 2010 Effects of dissipation on an adiabatic quantum search algorithm. New Journal of Physics 12
dc.identifier.uri http://hdl.handle.net/10550/33117
dc.description.abstract According to recent studies (Amin et al 2008 Phys. Rev. Lett. 100 060503), the effect of a thermal bath may improve the performance of a quantum adiabatic search algorithm. In this paper, we compare the effects of such a thermal environment on the algorithm performance with those of a structured environment similar to the one encountered in systems coupled to an electromagnetic field that exists within a photonic crystal. Whereas for all the parameter regimes explored here, the algorithm performance is worsened by contact with a thermal environment, the picture appears to be different when one considers a structured environment. In this case we show that by tuning the environment parameters to certain regimes, the algorithm performance can actually be improved with respect to the closed system case. Additionally, the relevance of considering the dissipation rates as complex quantities is discussed in both cases. More specifically, we find that the imaginary part of the rates cannot be neglected with the usual argument that it simply amounts to an energy shift and in fact influences crucially the system dynamics.
dc.relation.ispartof New Journal of Physics, 2010, vol. 12
dc.subject Òptica quàntica
dc.title Effects of dissipation on an adiabatic quantum search algorithm.
dc.type journal article es_ES
dc.date.updated 2014-02-20T09:34:24Z
dc.identifier.doi 10.1088/1367-2630/12/12/123010
dc.identifier.idgrec 063305
dc.rights.accessRights open access es_ES
dc.identifier.url 10.1088/1367-2630/12/12/123010

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