Noise-assisted quantum transport and computation

被引:19
|
作者
de Falco, Diego [1 ]
Tamascelli, Dario [1 ]
机构
[1] Univ Milan, Dipartimento Informat, I-20135 Milan, Italy
关键词
STATES;
D O I
10.1088/1751-8113/46/22/225301
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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.
引用
收藏
页数:14
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