Manipulation of electromagnetic field interference plays an essential role in the study of a number of light-matter interactions and nonlinear/quantum optical effects. In this talk, we will discuss the interferential generation of optical anti-reflection and electromagnetic vacuum and its potential to realize new optical field textures or to investigate magneto-optical phenomena and exciton activities in two dimensions. First, resonant extreme anti-reflection based on an optical multilayer structure significantly improves magneto-optic Kerr effect (MOKE) microscopy for an atomically thin magnetic film. High-visibility MOKE microscopy enables real-time measurement and statistical analysis of magnetization reversal events beyond the optical diffraction limit. Second, we implement a unique photonic platform that supports non-trivial optical field textures of ideal anti-reflection singularities corresponding to optical vortices and anti-vortices in two dimensions. The external field-driven phase transition between the trivial and non-trivial topological textures allows the optical vortex and anti-vortex to exhibit dynamical properties analogous to unbounded quasiparticles in other physical entities. Third, we will present a metasurface mirror to tailor optical vacuum field interferences and to tune the radiative decay dynamics of two-dimensional excitons with more optical degrees of freedom.