Non-Classical Property of Radiation Field

The thesis explores the quantum properties of electromagnetic fields. It is focusing on the transition from classical optics to quantum optics. From the quantization of the electromagnetic field based on Maxwell's equations, it studies photon statistics in thermal and coherent fields. The study draws a comparison between the classical Bose-Einstein statistics of thermal fields and the Poissonian statistics of quantum coherent states (like laser light). The main focus of the study is on non-classical light, including squeezed states and photon anti-bunching. Squeezed states, where noise is reduced in one quadrature. This phenomenon is used for detecting high-precision measurements, like gravitational waves. Photon anti-bunching is a property of single-photon sources, reveals the quantum particle-like nature of light. The study explorers the significance of these non-classical states in quantum information science, which are highly used in teleportation, cryptography and computing.