We show that the effective gauge field for photons provides a versatile platform for controlling the flow of light. As an example we consider a photonic resonator lattice where the coupling strength between nearest neighbor resonators are harmonically modulated. By choosing different spatial distributions of the modulation phases, and hence imposing different inhomogeneous effective magnetic field configurations, we numerically demonstrate a wide variety of propagation effects including negative refraction, one-way mirror, and on and off-axis focusing. Since the effective gauge field is imposed dynamically after a structure is constructed, our work points to the importance of the temporal degree of freedom for controlling the spatial flow of light.
Breaking the Limitations of Temporal Modulation via Mixed Continuity Conditions
School of Physics, Harbin Institute of Technology（哈尔滨工业大学物理学院）；Heilongjiang Provincial Key Laboratory of Plasma Physics and Application Technology（黑龙江省等离子体物理及应用技术重点实验室）；Heilongjiang Provincial Innovation Research Center for Plasma Physics and Application Technology（黑龙江省等离子体物理及应用技术创新研究中心）
Superluminal Spacetime Crystals Induced by Anomalous Velocity Modulation
University of Lisbon–Instituto Superior Técnico and Instituto de Telecomunicações（里斯本大学高等技术学院与电信研究所）；Instituto Universitário de Lisboa (ISCTE-IUL)（里斯本大学学院）
Impact of Stimulated Brillouin Scattering on Modulation Instability in Fiber Fabry-Perot Resonators
Laboratoire Physique des Lasers, Atomes et Molécules, UMR No. 8523, CNRS, University of Lille（里尔大学）；Service OPERA-Photonique, Université libre de Bruxelles (ULB)（布鲁塞尔自由大学）
