论文标题
单分子系统中的量子相干动力学：广义随机liouville方程
Quantum coherent dynamics in single molecule systems: generalized stochastic Liouville equation
论文作者
论文摘要
我们提出了广义的随机liouville方程，以研究单分子系统中的相干动力学，并耦合到表现出非平稳性和非马克维亚特征的环境。广义的随机liouville方程包含与内在系统汉密尔顿和环境噪声的非马克维亚特征相关的广义内存内核，该噪声返回到库博在环境噪声是平稳且无内存的限制情况下建立的众所周知的框架。量子系统的相干性可以通过在两个分离平均值中的广义随机liouville方程来得出，而无需考虑环境噪声的统计特征。我们表达了由非平稳性和非马克维亚RTN诱导的单分子系统相干性的确切分析表达，并且系统相干性的分析结果与通过其他某些理论方法得出的分析结果非常一致。
We propose the generalized stochastic Liouville equation to investigate the coherent dynamics in single molecule systems coupled to environments which exhibit both nonstationary and non-Markovian features. The generalized stochastic Liouville equation contains a generalized memory kernel associated with both the intrinsic system Hamiltonian and the non-Markovian features of the environmental noise, which returns to the well-known framework established by Kubo in the limit case that the environmental noise is stationary and memoryless. The coherence of the quantum system can be derived by means of the generalized stochastic Liouville equation in two separated averages with no need to consider the statistical characteristics of the environmental noise. We express the exact analytical expressions of the coherence of the single molecule systems induced by the nonstationary and non-Markovian RTN, and the analytical results of the system coherence are in well consistent with that derived by means of some other theoretical approaches.
