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Quantum Dot Vertical-Cavity Emission

Interactive 3D simulation of a quantum dot inside a vertical DBR microcavity: tune its standing-wave position, cavity detuning and mirror reflectivity to see the Purcell effect reshape spontaneous emission rate, cavity coupling efficiency and far-field beam divergence.

Quantum Physics3DAdvanced60 FPS📱 Mobile-adapted⇄ 2D version

This simulator places a quantum dot inside a vertical Fabry–Pérot microcavity bounded by two distributed Bragg reflector mirror stacks — the same architecture behind VCSELs and micropillar single-photon sources. Drag the dot along the cavity's standing wave, detune its emission line from the cavity resonance, and add or remove DBR mirror pairs to watch the Purcell effect live: the spontaneous emission rate, the fraction of photons captured into the cavity mode, and the far-field beam divergence all respond to real Purcell-effect and DBR-reflectivity relations, rendered as glowing photon streaks launching straight up through the top mirror.

⚙ Under the hood

quantum opticsquantum dotmicrocavityPurcell effectphotonics

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install