Quantum excitation physics

Quantum excitation physics deals with the phenomena occurring when particles, atoms or molecules transition from a lower energy state to a higher energy state due to the absorption of energy. This energy can be supplied in various forms, such as electromagnetic radiation, thermal energy or particle collisions. Quantum excitation plays a crucial role in a wide range of physical processes, including atomic and molecular transitions, laser operation, spectroscopy, and material properties, where energy absorption and emission are governed by the discrete, quantised nature of the system.