论文标题
在光学产生的电势中增强了激子 - 两极的热化
Enhanced thermalization of exciton-polaritons in optically generated potentials
论文作者
论文摘要
长叶时代的微腔[物理学，polarevity的平衡bose-instein凝结，造成激子 - 果龙的凝结。莱特牧师。 118，016602（2017）]已证明，驱动的脉冲系统可以在准片段寿命超过热力时间的情况下进行热力学相变。在这里，我们确定了维数和极化相互作用在确定光学生成陷阱中的热化程度中的作用。为了区分诱捕的效果与相互作用和寿命，我们在方形几何形状中测量了四个非共振高斯泵下的极性分布，并将其与每个泵分别测量的极性分布进行了比较。我们发现，通过捕获和修饰状态密度，产生了极地的显着重新分布。弯曲点极化子的耗尽证明了令人惊讶的有效的极性偏极散射。我们的工作提供了对北极星分布及其相互作用的更深入的了解，这些分布在光学产生的电位的各种几何形状下。
Equilibrium Bose-Einstein condensation of exciton-polaritons, demonstrated with a long-lifetime microcavity [Phys. Rev. Lett. 118, 016602 (2017)], has proven that driven-dissipative systems can undergo thermodynamic phase transitions in the limit where the quasiparticle lifetime exceeds the thermalization time. Here, we identify the role of dimensionality and polariton interactions in determining the degree of thermalization in optically generated traps. To distinguish the effect of trapping from interactions and lifetimes, we measured the polariton distribution under four nonresonant Gaussian pumps in a square geometry and compared it with polariton distributions measured with each pump individually. We found that significant redistribution of polaritons arises by trapping and modification of the density of states. Surprisingly efficient polariton-polariton scattering below the condensation threshold is evidenced by the depletion of the inflection-point polaritons. Our work provides a deeper understanding of polariton distributions and their interactions under various geometries of optically generated potentials.
