论文标题
量子波动和分子极化凝结物的相干性
Quantum Fluctuations and Coherence of a Molecular Polariton Condensate
论文作者
论文摘要
为激子偏振子冷凝物开发了超出平均场状态以外的完整量子理论，以完全了解量子波动。我们找到了偏振子密度矩阵的分析溶液，显示了极化的非线性，导致快速弛豫与泵相关，以便在阈值处产生冷凝。提高泵强度，向下极化子的凝结的非平衡期过渡出现，其统计数据从热层转移到超级波斯顿语和非经典分布，超出了偏离型长远程阶层的理解。结果表明，暗状态在极地波动中的作用，并导致发射光子的非经典计数统计，从而阐述了关键参数的作用，例如泵，失谐和温度。
A full quantum theory beyond the mean-field regime is developed for an exciton polariton condensate, to gain a complete understanding of quantum fluctuations. We find analytical solution for the polariton density matrix, showing the polariton nonlinearity causing fast relaxation correlated with the pump so as to yield the condensation at threshold. Increasing the pump intensity, a nonequilibrium phase transition towards the condensation of lower polaritons emerges, with a statistics transiting from a thermal, through a super-Poissonian and to a nonclassical distribution beyond the understanding at the level of off-diagonal long-range order. The results signify the role of dark states for polariton fluctuations, and lead to a nonclassical counting statistics of emitted photons, which elaborates the role of the key parameters, e.g., pump, detuning and temperature.
