当前位置: X-MOL 学术Commun. Phys. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Time-delay polaritonics
Communications Physics ( IF 5.5 ) Pub Date : 2020-01-07 , DOI: 10.1038/s42005-019-0271-0
J. D. Töpfer , H. Sigurdsson , L. Pickup , P. G. Lagoudakis

Non-linearity and finite signal propagation speeds are omnipresent in nature, technologies, and real-world problems, where efficient ways of describing and predicting the effects of these elements are in high demand. Advances in engineering condensed matter systems, such as lattices of trapped condensates, have enabled studies on non-linear effects in many-body systems where exchange of particles between lattice nodes is effectively instantaneous. Here, we demonstrate a regime of macroscopic matter-wave systems, in which ballistically expanding condensates of microcavity exciton-polaritons act as picosecond, microscale non-linear oscillators subject to time-delayed interaction. The ease of optical control and readout of polariton condensates enables us to explore the phase space of two interacting condensates up to macroscopic distances highlighting its potential in extended configurations. We demonstrate deterministic tuning of the coupled-condensate system between fixed point and limit cycle regimes, which is fully reproduced by time-delayed coupled equations of motion similar to the Lang-Kobayashi equation.



中文翻译:

延时极化

非线性和有限的信号传播速度在自然,技术和现实问题中无处不在,因此对描述和预测这些元素的影响的有效方法提出了很高的要求。工程凝结物系统(例如捕获的凝结物的晶格)的进步使人们能够研究多体系统中的非线性效应,在该系统中,晶格节点之间的粒子交换是有效的。在这里,我们演示了一种宏观物质-波系统的机制,其中微腔激子-极化子的弹道扩展冷凝物充当皮秒微缩非线性振荡器,并受到时间延迟的相互作用。光学控制的简便性和极化子冷凝物的读取使我们能够探索两个相互作用的冷凝物的相空间,直至达到宏观距离,从而突出了其在扩展配置中的潜力。我们展示了定点和极限循环状态之间的耦合凝结水系统的确定性调整,该行为完全通过类似于Lang-Kobayashi方程的时滞耦合运动方程来重现。

更新日期:2020-01-07
down
wechat
bug