Laser Cooling: From Noise to Quantum Silence ⚡ экспресс
Original: "Coherent Feedback Cooling of an Ultracoherent Phononic-Crystal Membrane at Room Temperature"
A combination of laser techniques has reduced a membrane's thermal jitter at room temperature by a record-breaking 33,000 times.
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Silence a bell without touching it, just by shining a laser? That’s how physicists cooled a microscopic membrane to a nearly quantum state at room temperature. The vibrations faded 33,000-fold — a step toward detectors that will catch the gravitational whisper of distant black holes.
🎯 If you could hear the membrane, its noise before cooling would be like the roar of a stadium crowd, and after — a single person whispering in an empty library.