标题： 量子点吸收和共振荧光中的声子诱导效应与纯态层次结构 显示英文标题

标题： Phonon-Induced Effects in Quantum Dot Absorption and Resonance Fluorescence with Hierarchy of Pure States

摘要： 我们研究一个与具有超欧姆谱密度的振动环境耦合的量子点（QD）系统，并弱耦合到一个泄漏腔模，这是一个与基于半导体的单光子源相关的模型。 声子耦合引起去相位并展宽吸收和发射线形，而弱耦合的腔模导致对QD的有效驱动。 为了捕捉非马尔可夫效应，我们使用非马尔可夫量子态扩散及其层次扩展——纯态层次结构来计算吸收和共振荧光光谱背后的多时间关联函数。 我们给出了在强声子耦合和有限温度下的吸收光谱数值结果，以及在不同声子耦合强度和温度下的共振荧光光谱，并分析了共振荧光光谱的可见性，以提供关于声子耦合和热效应如何影响光谱特征的见解。 显示英文摘要

摘要： We investigate a quantum dot (QD) system coupled to a vibrational environment with a super-Ohmic spectral density and weakly to a leaky cavity mode, a model relevant for semiconductor-based single-photon sources. The phonon coupling induces dephasing and broadens the absorption and emission line shapes, while the weakly coupled cavity mode leads to effective driving of the QD. To capture non-Markovian effects, we use non-Markovian Quantum State Diffusion and its hierarchical extension the Hierarchy of Pure States to compute multitime correlation functions underlying absorption and resonance fluorescence spectra. We present numerical results for the absorption spectra at strong phonon coupling and finite temperature, as well as for resonance fluorescence spectra at varying phonon coupling strengths and temperatures, and analyse the visibility of the resonance fluorescence spectra to provide insights into how phonon coupling and thermal effects influence the spectral features.