用激光演示群体同步和一级跃迁
Experimental demonstration of crowd synchrony and first-order transition with lasers
摘要：
群体同步是指不同且独立的振子通过一个共同的中间体相互作用的同步，在许多领域都是普遍存在的。在这里，我们通过耦合激光实验演示了人群同步的效果，类似于千禧桥的效果。当激光器的数量低于临界数量时，不存在同步，但是在达到临界数量之后，激光器瞬时同步。我们表明，作为其数量的函数的激光器的同步如下一个一阶的过渡，我们的实验结果是在很好的协议与理论模型预测。
英文摘要：
Crowd synchrony, which corresponds to the synchronization of different and independent oscillators that interact with each other via a common intermediate, is ubiquitous in many fields. Here, we experimentally demonstrate the effect of crowd synchrony, analogous to that of the Millennium Bridge, by resorting to coupled lasers. When the number of lasers is below a critical number, there is no synchronization, but after reaching the critical number, the lasers instantaneously synchronize. We show that the synchronization of the lasers as a function of their number follows a first-order-like transition, and that our experimental results are in good agreement with those predicted by theoretical models.
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