Comparing different non-Markovianity measures in a driven qubit system
Comparing different non-Markovianity measures in a driven qubit system
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DOI：
10.1103/physreva.83.012112
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发表时间：
2011-01-31
影响因子：
2.9
通讯作者：
Maniscalco, S.
中科院分区：
文献类型：
--
作者：
Haikka, P.;Cresser, J. D.;Maniscalco, S.
我们考虑两个最近提出的措施的非马尔可夫适用于一个特定的量子过程描述的动力学驱动量子比特在结构化水库。这项研究的动机是双重的：一方面，我们研究的差异和类比的非马尔可夫度量，另一方面，我们调查的驱动力的量子比特的耗散动力学的影响。特别是，我们问的驱动力是否引入了新的渠道，系统和环境之间的能量和/或信息传输，或者如果它放大现有的。我们展示了在何种条件下驱动力的存在减缓了量子比特的量子特性的不可避免的损失。
We consider two recently proposed measures of non-Markovianity applied to a particular quantum process describing the dynamics of a driven qubit in a structured reservoir. The motivation for this study is twofold: on one hand, we study the differences and analogies of the non-Markovianity measures, and on the other hand, we investigate the effect of the driving force on the dissipative dynamics of the qubit. In particular we ask if the driving force introduces new channels for energy and/or information transfer between the system and the environment or if it amplifies existing ones. We show under which conditions the presence of the driving force slows down the inevitable loss of quantum properties of the qubit.