物理
光子学
自发辐射
电子
光子晶体
电介质
量子光学
动量(技术分析)
量子
折射率
光电子学
激光器
偶极子
辐射
光学
量子力学
财务
经济
作者
Mordechai Segev,Eran Lustig,Alex Dikopoltsev,Yonatan Sharabi,Mark Lyubarov,Ohad Segal,Yaakov Lumer
摘要
Photonic Time Crystals (PTCs) are dielectric media whose refractive index is modulated periodically in time at time scales of an optical cycle. These systems conserve momentum but not energy, and are characterized by momentum bands and bandgaps, where the amplitudes of their eigenmodes can increase (or decrease) exponentially. But more interesting than all the rest - I will discuss the classical and quantum features of light emission in PTCs from various radiation sources, such as free electrons, classical dipoles, quantum fluctuations, and the emission by atoms. The latter opens new avenues for making widely tunable lasers that extract energy from the temporal modulation of the medium.
科研通智能强力驱动
Strongly Powered by AbleSci AI