Atomic Lock: How to Catch Light in a Solar Storm ⚡ экспресс
Original: "Detection of photon-level signals embedded in sunlight with an atomic photodetector"
A single rubidium atom can catch a lone particle of light even in blinding sunshine.
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A single rubidium atom acts as a detector, counting individual photons in blinding sunlight. Such a receiver could become the basis for daytime quantum communication and lidars operating in full sun.
🎯 Every second, about 10¹⁸ particles of sunlight hit each square millimeter of Earth's surface. The atom filter screens out all but a tiny fraction — like a sieve that catches only precious grains.