光子流体的色散溃坝流动
Dispersive dam-break flow of a photon fluid
摘要：
我们利用纤维光学装置研究浅水溃坝现象的时间光子模拟。我们清楚地观察到阶梯状输入（光子坝）衰减成一对相反传播的稀疏波和色散冲击波。我们的研究结果表明，分散冲击到一个自空泡状态的临界过渡的证据。详细观察空化状态的动态允许一个完全定量的测试的Whitham调制理论适用于通用散焦非线性薛定谔方程。
英文摘要：
We investigate the temporal photonic analogue of the dam-break phenomenon for shallow water by exploiting a fiber optics setup. We clearly observe the decay of the step-like input (photonic dam) into a pair of oppositely propagating rarefaction wave and dispersive shock wave. Our results show evidence for a critical transition of the dispersive shock into a self-cavitating state. The detailed observation of the cavitating state dynamics allows for a fully quantitative test of the Whitham modulation theory applied to the universal defocusing nonlinear Schroedinger equation.
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