Nanocrystal Light Emission Reveals Quantum Zero-Point Motion in Atomic Lattice
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6mo ago· 5 min readenNews
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Summary
Researchers have observed unexpected light emission from a nanocrystal cooled to near absolute zero, which is shown to arise from quantum fluctuations in the crystal's atomic lattice. This phenomenon demonstrates zero-point motion - the quantum effect where atoms continue to wiggle even at temperatures approaching absolute zero. The discovery provides new evidence of quantum motion in solid-state systems and offers insights into quantum fluctuations at the atomic scale.
Key quotes
· 4 pulledThe atoms inside a crystal never stop moving, even when the object's temperature approaches absolute zero. This quantum effect is called zero-point motion.
Zero-point motion is an irrepressible wiggling that becomes visible at temperatures near absolute zero.
A nanocrystal cooled to near absolute zero produces an unexpected light emission, which is shown to arise from quantum fluctuations in the crystal's atomic lattice.
Evidence of this quantum motion has previously been uncovered for trapped particles and for small resonators.
A nanocrystal cooled to near absolute zero produces an unexpected light emission, which is shown to arise from quantum fluctuations in the crystal’s atomic lattice.
