Saba M, Quochi F, Ciuti C, Oesterle U, Staehli JL, Deveaud B, Bongiovanni G, Mura A
Physics Department, Federal Institute of Technology, PH-Ecublens, CH-1015 Lausanne, Switzerland.
Phys Rev Lett. 2000 Jul 10;85(2):385-8. doi: 10.1103/PhysRevLett.85.385.
Pump-probe measurements in a microcavity containing a quantum well show that a population of circularly polarized ( sigma(+)) excitons can completely inhibit the transition to sigma(-) one-exciton states by transferring the oscillator strength to the biexcitonic resonance. With increasing pump intensity the linear exciton-polariton doublet evolves into a triplet polariton structure and finally into a shifted biexciton-polariton doublet. A theoretical model of interacting excitons demonstrates that the crossover from exciton to biexciton polaritons is driven by three-exciton Coulomb correlation.
在包含量子阱的微腔中进行的泵浦-探测测量表明，圆偏振（σ⁺）激子群体可以通过将振子强度转移到双激子共振，完全抑制向σ⁻单激子态的跃迁。随着泵浦强度的增加，线性激子-极化激元二重态演变成三重态极化激元结构，最终演变成位移的双激子-极化激元二重态。相互作用激子的理论模型表明，从激子到双激子极化激元的转变是由三激子库仑关联驱动的。
