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arXiv 1003.1804quant-phphysics.bio-ph
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无序系统中量子输运的反Zeno效应

Anti-Zeno Effect for Quantum Transport in Disordered Systems

Keisuke Fujii, Katsuji Yamamoto

摘要:

我们证明了在一定条件下,无序系统中的重复测量可以诱导量子反Zeno效应,从而增强量子输运。在重复测量下,用简单的模型确实显示了能量传递的增强。反芝诺效应的最佳测量间隔和能量转移的最大效率指定的相关的物理参数。由于环境作为系统上的频繁测量,消相干诱导的能量转移,这是最近讨论的光合复合物,可以解释在反芝诺效应。我们还发现了一个有趣的现象,即局域退相干或重复测量甚至可以促进非局域点之间的纠缠产生。

英文摘要:

We demonstrate that repeated measurements in disordered systems can induce quantum anti-Zeno effect under certain condition to enhance quantum transport. The enhancement of energy transfer is really exhibited with a simple model under repeated measurements. The optimal measurement interval for the anti-Zeno effect and the maximal efficiency of energy transfer are specified in terms of the relevant physical parameters. Since the environment acts as frequent measurements on the system, the decoherence-induced energy transfer, which has been discussed recently for photosynthetic complexes, may be interpreted in terms of the anti-Zeno effect. We further find an interesting phenomenon, where local decoherence or repeated measurements may even promote entanglement generation between the non-local sites.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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