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arXiv 0905.2337cond-mat.quant-gascond-mat.other
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激子-极化激元凝聚体中的长程序动力学

Dynamics of long-range order in an exciton-polariton condensate

G. Nardin, K. G. Lagoudakis, M. Wouters, M. Richard, A. Baas, R. Andre, Le Si Dang, B. Pietka, B. Deveaud-Pledran

摘要:

本文报道了激子极化子玻色-爱因斯坦凝聚体中一阶空间相干性的时间分辨测量。长程空间相干性被发现设置在受激散射的发病权,在皮秒的时间尺度。相干性在人口之后达到其最大值,并且衰减得更慢,停留在几百皮秒。这种行为可以定性地再现,使用随机经典场模型描述的极化激元凝聚体和激子水库之间的相互作用在一个无序的潜力。

英文摘要:

We report on time resolved measurements of the first order spatial coherence in an exciton polariton Bose-Einstein condensate. Long range spatial coherence is found to set in right at the onset of stimulated scattering, on a picosecond time scale. The coherence reaches its maximum value after the population and decays slower, staying up to a few hundreds of picoseconds. This behavior can be qualitatively reproduced, using a stochastic classical field model describing interaction between the polariton condensate and the exciton reservoir within a disordered potential.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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