Deng Hui, Weihs Gregor, Santori Charles, Bloch Jacqueline, Yamamoto Yoshihisa
Quantum Entanglement Project, ICORP, JST, Edward L. Ginzton Laboratory, Stanford University, Stanford, CA 94305, USA.
Science. 2002 Oct 4;298(5591):199-202. doi: 10.1126/science.1074464.
A phase transition from a classical thermal mixed state to a quantum-mechanical pure state of exciton polaritons is observed in a GaAs multiple quantum-well microcavity from the decrease of the second-order coherence function. Supporting evidence is obtained from the observation of a nonlinear threshold behavior in the pump-intensity dependence of the emission, a polariton-like dispersion relation above threshold, and a decrease of the relaxation time into the lower polariton state. The condensation of microcavity exciton polaritons is confirmed.
在一个砷化镓多量子阱微腔中，通过二阶相干函数的降低，观察到了激子极化激元从经典热混合态到量子力学纯态的相变。从发射的泵浦强度依赖性中的非线性阈值行为、高于阈值的极化激元样色散关系以及进入低极化激元态的弛豫时间的降低等观察结果中获得了支持证据。微腔激子极化激元的凝聚得到了证实。
