Photon thermodynamics

Photon thermodynamics is the study of energy transfer, storage and conversion involving photons, the elementary particles of light. This field bridges disciplines such as thermodynamics, quantum mechanics and optics, focusing on the thermal behaviour of electromagnetic radiation and its interactions with matter. The principles of photon thermodynamics are critical to understanding and optimising processes in solar energy harvesting, radiation heat transfer and quantum information systems.

By treating photons as carriers of energy and momentum with defined statistical properties, photon thermodynamics provides insights into phenomena such as blackbody radiation, radiative heat transfer, and entropy exchange in optical systems. This framework enables precise control over energy processes involving light and plays a pivotal role in developing advanced energy systems and optical devices.