emittercavity
An emitter–cavity system, or emitter in a cavity, refers to a quantum emitter such as a two‑level atom, a quantum dot, or a color center placed inside an optical or microwave cavity whose resonant mode strongly interacts with the emitter’s transition. The cavity provides a discrete electromagnetic mode with resonance ωc, a quality factor Q, and a mode volume V, shaping the density of optical states available to the emitter.
In cavity quantum electrodynamics, the interaction is described by the Jaynes–Cummings model with coupling strength g.
Common platforms include semiconductor microcavities with embedded quantum dots, photonic crystal nanocavities, micropillar cavities, ring resonators,
Applications span deterministic single-photon sources, quantum information processing, indistinguishable photons, and quantum networks. The emitter–cavity framework