Fullerene: A Ball That Shoots Single Photons ⚡ экспресс
Researchers have shown that ordinary C60 fullerenes (carbon molecules shaped like a soccer ball), embedded in polystyrene, can emit single photons on demand at room temperature. These emitters have a short fluorescence lifetime, ensuring a high emission rate. Using widely available, low-cost materials and simple fabrication offers a reliable and scalable alternative to existing expensive single-photon sources. This breakthrough could democratize quantum photonic technologies.
Ordinary light is a stream of billions of particles flying chaotically. But for quantum communication, you need light that comes one by one, like water from an IV drip. Scientists found a simple way: they took fullerene — carbon balls shaped like a soccer ball — and mixed them with ordinary polystyrene (the stuff disposable cups are made of). The result is a film that, when illuminated, emits strictly single photons.
The secret lies in fluorescence — the ability of molecules to glow after absorbing energy. But fullerene in plastic behaves like a perfect faucet: every time it gets a dose of light, it gives back exactly one photon. No more, no less. Such a source doesn’t need refrigerators or complex lasers — it works at room temperature.
Sources like this are the key to quantum cryptography (absolutely secure data transmission) and quantum computers. Fullerene is cheap, stable, and easily integrated into optical fiber — the glass threads that carry the internet. Soon, a piece of plastic with carbon balls could protect your data from any hack. And to think, fullerene was first spotted in ordinary candle soot — now it’s making quantum communication everyday.
🎯 Fullerene C60 was predicted long before synthesis and even occurs in nature — for example, in candle soot.