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Effect of system level structure and spectral distribution of the environment on the decoherence rate

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arxiv quant-ph/0701086 v2 pith:F2OTZIBJ submitted 2007-01-14 quant-ph

Effect of system level structure and spectral distribution of the environment on the decoherence rate

classification quant-ph
keywords decoherenceeffectenvironmentsystemlevelquantumratespectral
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Minimizing the effect of decoherence on a quantum register must be a central part of any strategy to realize scalable quantum information processing. Apart from the strength of the coupling to the environment, the decoherence rate is determined by the the system level structure and by the spectral composition of the noise trace that the environment generates. Here, we discuss a relatively simple model that allows us to study these different effects quantitatively in detail. We evaluate the effect that the perturbation has on an NMR system while it performs a Grover search algorithm.

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