Propagation of phase non-analytical points in fast and slow light media
Propagation of phase non-analytical points in fast and slow light media
复制标题
快慢光介质中相位非解析点的传播
DOI：
10.1103/physreva.96.023813
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发表时间：
2017
影响因子：
2.9
通讯作者：
Yuma Morita and Makoto Tomita
中科院分区：
文献类型：
--
作者：
E. Paris;L. Simonelli;T. Wakita;C. Marini;J.-H. Lee;W. Olszewski;K. Terashima;T. Kakuto;N. Nishimoto;T. Kimura;K. Kudo;T. Kambe;M. Nohara;T. Yokoya;N. L. Saini;杉本貴則;Yuma Morita and Makoto Tomita
我们进行了一系列实验，使用高斯形时间脉冲并对脉冲包络内不同位置的相位非分析点进行编码，来检查快光和慢光介质中相位非分析点的到达。对于相位非解析点，缓慢变化的脉冲包络的幅度以及任何阶的导数都是连续的，但载波的相位是不连续的。相位非解析点既不超前也不延迟，而是在进入快光和慢光介质的同一时刻出现，这与信息速度等于真空或背景介质中的光速的想法非常一致。
We performed a series of experiments to examine the arrival of phase nonanalytical points in fast- and slow-light media, using a Gaussian-shaped temporal pulse and encoding phase nonanalytical points at various positions within the pulse envelope. For the phase nonanalytical points, the amplitude of the slowly varying pulse envelope, as well as any order of the derivatives, is continuous, but the phase of the carrier wave is discontinuous. The phase nonanalytical points were neither advanced nor delayed, but appeared at the same instance as they entered the fast- and slow-light media, in good accordance with the idea that the information velocity was equal to the velocity of light in a vacuum,, or in the background medium.