An answer to this question led to a new field of study in Physics: Quantum Optics. At the level of quantum optics, the behavior of individual photons has a bearing on the outcoming light, as opposed to classical optics, which was … Progress in the development of light sources and detection techniques since the early 1980s has allowed increasingly sophisticated optical… Foundations of quantum optics: interaction of two-level atoms with light; basic elements of laser theory; fundamental consequences of the quantization of the light field; introduction to modern optics in quantum optics. Optics is known as the oldest discipline along with mechanics.The progress of the study of light has been made by the great scholars from different fields introduced here while leading other discipline and closely involved with the growth of industry and culture. Although quantum optics was only developed in recent decades, its origin can be History; Concepts; Quantum electronics; See also; Notes; References Quantum optics (QO) is a field of research that uses semi-classical and quantum-mechanical physics to investigate phenomena involving light and its interactions with matter at submicroscopic levels. It can explain all the optical phenomena observed so far. Other articles where Quantum optics is discussed: light: Quantum optics: Quantum optics, the study and application of the quantum interactions of light with matter, is an active and expanding field of experiment and theory. Its highest form is Maxwell’s electromagnetic theory of light. For instance, in an ion trap quantum computer the motional states of the ions are of interest while the state of the light field is secondary. The Birth of Quantum Optics. Quantum Optics . The advent of laser required a careful description of the various sources of light. Throughout the history of quantum optics, experiments focused primarily on understanding the internal dynamics of the matter when interacting with the light field. Quantum optics is a field of research that deals with the application of quantum mechanics to phenomena involving light and its interactions with matter. The question was: What is the fundamental difference between the conventional light sources, such as the sun, and the newly discovered laser light? In other words, it is quantum mechanics applied to photons or light. Quantum optics is a branch of quantum physics that focuses primarily on the behavior of light, or photons. The development of classical optics has a history of a few hundred years. Quantum optics is the most complete theory of light. [1] Contents.