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Quantum physics

Squeezed ions in two places at once

Experiments on a trapped calcium ion have again exposed the strange nature of quantum phenomena, and could pave the way for sensitive techniques to explore the boundary between the quantum and classical worlds. See Letter p.336

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Figure 1: Squeezing an ion's positional uncertainty.

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Correspondence to Tracy Northup.

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Northup, T. Squeezed ions in two places at once. Nature 521, 295–296 (2015). https://doi.org/10.1038/521295a

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