Two-dimensional electronic spectroscopy apparatus to explore Bose-Einstein condensation in organic semiconductor materials

理解强烈的光-物质相互作用是量子光学的中心目标，因为它提供了了解量子凝聚物理，特别是宏观电子相干性的窗口。我们将开发基于有机半导体的高品质因数光学微腔，以探索激子极化激子的动力学，激子极化是这些器件中的基本激发。这可以理解为腔光子和激子的叠加。由于极化子是复合玻色子，并且由于这些材料中吸收的高振子强度，这些材料可能在高温(甚至可能是室温)下发生玻色-爱因斯坦凝聚(BEC)。我们将使用线性和非线性光谱，主要是二维光子回波技术，来揭示极化激元的动力学。我们的目标是了解极化子的电子退相机制，以便在高温下获得BEC。

Understanding strong light-matter interactions is a central objective in quantum optics because it provides a window into the physics of quantum condensates, particularly macroscopic electronic coherence. We will develop high-quality-factor optical microcavities based on organic semiconductors in order to explore the dynamics of exciton polaritons, which are the fundamental excitations in these devices. These can be understood as a superposition of cavity photons and excitons. Because polaritons are composite bosons, and due to the high oscillator strength of absorption in these materials, these may undergo Bose-Einstein condensation (BEC) at elevated temperatures (maybe even room temperature). We will unravel polariton dynamics using linear and non-linear spectroscopies, principally two-dimensional photon echo techniques. Our objective will be to understand electronic dephasing mechanisms of polaritons in order to obtain BEC at high temperatures.