Quantifying non-Markovianity for a chromophore-qubit pair in a super-Ohmic bath

Jing Liu; Kewei Sun; Xiaoguang Wang; Yang Zhao

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arXiv · 1410.5066

Quantifying non-Markovianity for a chromophore-qubit pair in a super-Ohmic bath

Jing Liu·Kewei Sun·Xiaoguang Wang·Yang Zhao

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Abstract

An approach based on a non-Markovian time-convolutionless polaron master equation is used to probe the quantum dynamics of a chromophore-qubit in a super-Ohmic bath. Utilizing a measure of non-Markovianity based on dynamical fixed points, we study the effects of the environment temperature and the coupling strength on the non-Markovian behavior of the chromophore in a super-Ohmic bath. It is found that an increase in the temperature results in a reduction in the backflow information from the environment to the chromophore, and therefore, a suppression of non-Markovianity. In the weak coupling regime, increasing coupling strength will enhance the non- Markovianity, while the effect is reversed in the strong coupling regime.

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Jing Liu, Kewei Sun, Xiaoguang Wang, Yang Zhao. 2014-10-19. Quantifying non-Markovianity for a chromophore-qubit pair in a super-Ohmic bath. https://arxiv.org/abs/1410.5066

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