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Single-Photon Source — Antibunching Simulator

Watch a quantum dot single-photon source emit light one photon at a time through a Hanbury Brown-Twiss beamsplitter setup; a live g²(τ) coincidence histogram shows the antibunching dip, contrasted against an ordinary attenuated laser source.

Optics & Light3DAdvanced60 FPS

A semiconductor quantum dot excited by a pump-laser pulse train can store and release at most one electron-hole pair per cycle, so it emits light one photon at a time — never two at once. This simulator sends each emitted pulse through a Hanbury Brown–Twiss beamsplitter to two detectors and accumulates a live g²(τ) coincidence histogram, letting you compare the quantum dot's deep antibunching dip at τ=0 against an ordinary attenuated laser source, whose coherent statistics keep the central peak near 1 like all the others.

⚙ Under the hood

Watch a quantum dot single-photon source emit light one photon at a time through a Hanbury Brown-Twiss beamsplitter setup; a live g²(τ) coincidence histogram builds an antibunching dip at zero delay, contrasted against an ordinary attenuated laser source that occasionally fires two photons at once.

quantum opticssingle-photon sourcephoton antibunchingquantum dothanbury brown-twissg2 correlationquantum optoelectronicsphoton statistics

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