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 us to overcome localization (noise-assisted transport). In this paper, we investigate the relation between the 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.
Noise-assisted quantum transport and computation / D. de Falco, D. Tamascelli. - In: JOURNAL OF PHYSICS. A, MATHEMATICAL AND THEORETICAL. - ISSN 1751-8113. - 46:22(2013 May), p. 225301.225301.
Noise-assisted quantum transport and computation
D. Tamascelli
2013
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 us to overcome localization (noise-assisted transport). In this paper, we investigate the relation between the 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.Pubblicazioni consigliate
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