Control and Ultrafast Dynamics of a Two-Fluid Polariton Switch
Control and Ultrafast Dynamics of a Two-Fluid Polariton Switch
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DOI：
10.1103/physrevlett.109.266407
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发表时间：
2012-12-27
影响因子：
8.6
通讯作者：
Sanvitto, D.
中科院分区：
文献类型：
--
作者：
De Giorgi, M.;Ballarini, D.;Sanvitto, D.
研究了由两个能量和动量不同的独立泵浦激光相干驱动的双组分极化子量子流体中的交叉相互作用。我们证明了一个极化激元信号的磁滞周期和开关阈值都可以完全由第二个极化激元流体控制。此外，我们还研究了驱动极化子态的超快开关动力学，展示了用外部激光脉冲在不到几皮秒的时间内控制极化子布居的能力。DOI：10.1103/PhysRevLett.109.266407
We investigate the cross interactions in a two-component polariton quantum fluid coherently driven by two independent pumping lasers tuned at different energies and momenta. We show that both the hysteresis cycles and the on-off threshold of one polariton signal can be entirely controlled by a second polariton fluid. Furthermore, we study the ultrafast switching dynamics of a driven polariton state, demonstrating the ability to control the polariton population with an external laser pulse, in less than a few picoseconds. DOI: 10.1103/PhysRevLett.109.266407