Quantum non-Markovianity modifies the environmental decoherence of a system. This situation is enriched in complex systems owing to interactions among subsystems. We consider the problem of distinguishing the multiple sources of non-Markovianity using a simple power spectrum technique, applied to a qubit interacting with another qubit via a Jaynes–Cummings-type Hamiltonian and simultaneously subjected to some well-known noise channels, such as the random telegraph noise and non-Markovian amplitude damping, which exhibit both Markovian as well as non-Markovian dynamics under different parameter ranges.

中文翻译：

---

从子系统动力学中区分环境引起的非马尔可夫性

量子非马尔可夫性改变了系统的环境退相干性。由于子系统之间的相互作用，这种情况在复杂系统中更加丰富。我们考虑使用简单的功率谱技术区分多个非马尔可夫性源的问题，应用于通过 Jaynes-Cummings 型哈密顿量与另一个量子位相互作用的量子位，同时受到一些众所周知的噪声通道，例如随机电报噪声和非马尔可夫幅度阻尼，在不同参数范围下表现出马尔可夫和非马尔可夫动力学。