Xiao M
Centro de Ciencias de la Materia Condensada, Universidad Nacional Autonoma de México, Apartado Postal 2681, Codigo Postal 22800 Ensenada, Baja California, Mexico.
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 1999 Nov;60(5 Pt B):6226-9. doi: 10.1103/physreve.60.6226.
The concept of time diffraction of evanescent electromagnetic waves is proposed. Transient propagation of electromagnetic waves is studied in two forms: propagating and evanescent waves. Differences and similarities between quantum particle tunneling and photon tunneling are clearly demonstrated. Traversal time cannot be accurately defined due to diffraction in time. Nevertheless, a delay time is defined as the difference between the time of flight and the peak time of the transient light. The delay time is found to increase linearly and slowly with the traversal distance. Superluminal tunneling is found possible only for evanescent waves, and Einstein causality is not violated.
提出了倏逝电磁波的时间衍射概念。研究了电磁波以两种形式的瞬态传播：传播波和倏逝波。清楚地展示了量子粒子隧穿与光子隧穿之间的异同。由于时间上的衍射，穿越时间无法精确界定。然而，将延迟时间定义为飞行时间与瞬态光峰值时间之差。发现延迟时间随穿越距离呈线性且缓慢增加。仅对倏逝波而言超光速隧穿是可能的，且未违反爱因斯坦因果律。
