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arXiv · 1212.2565

Noise-assisted quantum transport and computation

Diego de Falco·Dario Tamascelli
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Abstract

The transmission of an excitation along a spin chain can be hindered by the presence of small fixed imperfections that create trapping regions where the excitation may get caught (Anderson localization). A certain degree of noise, ensuing from the interaction with a thermal bath, allows to overcome localization (noise-assisted transport). In this paper we investigate the relation between noise-assisted transport and (quantum) computation. In particular we prove that noise does assist classical computation on a quantum computing device but hinders the possibility of creating entanglement.

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Diego de Falco, Dario Tamascelli. 2012-12-11. Noise-assisted quantum transport and computation. https://doi.org/10.1088/1751-8113%2F46%2F22%2F225301

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