Quantifying non-Markovianity for a chromophore-qubit pair in a super-Ohmic bath.
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 environmental 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 the coupling strength will enhance the non-Markovianity, while the effect is reversed in the strong coupling regime.
Division of Materials Science, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore. yzhao@ntu.edu.sg.
Jing
J
Liu
Kewei
K
Sun
Xiaoguang
X
Wang
Yang
Y
Zhao
D005456:Fluorescent Dyes / Q000737:chemistry*; D008390:Markov Chains; D009279:Naphthacenes / Q000737:chemistry; D010569:Perylene / Q000737:chemistry; D011789:Quantum Theory; D013696:Temperature
D005456:Fluorescent Dyes; D009279:Naphthacenes; D010569:Perylene; C523499:pentacene