Phys.org  November 1, 2024 The guiding and transport of energy, for example, of electromagnetic waves, underpins many modern technologies, ranging from long-distance optical fibre telecommunications to on-chip optical processors. It requires localizing the waves or particles in the confinement region, such as total internal reflection at a boundary. An international team of researchers (UK, USA – University of Arizona) introduced a waveguiding mechanism that relies on a different origin for the exponential confinement and that arises owing to the physics of diffusion. They demonstrated this concept using light and showed that the photon density could propagate as a guided mode […]