Simple

Glowing Atoms Create a Nearly Perfect Engine ⚡ экспресс

Original: "Superradiance and Superabsorption Engine of $$N$$ Two-Level Systems: $$N^{2}$$-Power Scaling at Near-Unity Efficiency"
arXiv:2510.12017 · 2025-10-13 · CC BY · ⏱ 1 min · Quantum Physics
When atoms shine in sync, a heat engine with near-perfect efficiency is born.
Abstract

An engine based on atoms working in harmony, like a crew team: they simultaneously absorb and emit energy. This allows near-perfect efficiency from a single cold source. Imagine a battery that charges just by cooling down? This quantum effect could power the future.

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Atoms, like a swarm of fireflies, shine in unison. When they flash together, the light multiplies—a hundred atoms shine ten thousand times brighter than one. Physicists have turned this trick into a heat engine. A typical motor needs both a hot and a cold source, but here the atoms operate with just a cold one.

The cycle is simple: atoms are synchronously charged with energy, and they release it in a powerful burst. The secret is that power doesn't grow in direct proportion to the number of atoms, but much faster. If one atom produces one unit of power, two produce four, and ten produce a hundred. Because of this, efficiency approaches 100%: the inevitable energy losses—entropy—nearly vanish.

Such an engine opens the door to microscopic devices with fantastic efficiency. It builds on the discoveries of Nobel laureates David Wineland and Serge Haroche. The simplest systems, like the hydrogen atom, are studied using spectroscopy—the precise measurement of light.

🎯 A hundred atoms flashing in sync shine not a hundred, but ten thousand times brighter than one.

P \propto N^2
Power P is directly proportional to the square of the number of atoms N. If you double the number of atoms, the power quadruples.
Scientists
Christian DopplerD. B. McLaughlinDidier QuelozMichel MayorR. A. RossiterJacob Bekenstein
Tags
entropy spectroscopy hydrogen
Laws
second law of thermodynamicsDoppler effectBekenstein-Hawking entropyCoulomb's lawMaxwell's equationsPlanck's law
Original: arXiv:2510.12017 · CC BY · bridge42worlds