What Role Do Quantum Fields Play in Nanophotonics?
Nanophotonics is the study of the behavior of light on the nanometer scale, and quantum fields are essential in this domain. The interaction between light (photons) and matter at the nanoscale involves quantum electrodynamics (QED), a subset of QFT. This interaction is foundational for the development of plasmonics, where light is manipulated using nanoparticles to create intense electromagnetic fields, enhancing applications like sensing and imaging.