quantum nonlinear optics

Quantum nonlinear optics studies how light interacts with materials at the quantum level, where photons (light particles) can influence each other in complex ways. Unlike traditional optics, which assumes light behaves independently, nonlinear optics involves interactions that change the light’s properties, like generating new frequencies or entangling photons. This field explores phenomena where quantum effects enable advanced technologies, such as secure communication and quantum computing. It combines principles of quantum mechanics with nonlinear material responses to harness and manipulate light in ways impossible with classical physics alone.