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Quantum physics

Getting the measure of entanglement

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A property called entanglement entropy helps to describe the quantum states of interacting particles, and it has at last been measured. The findings open the door to a deeper understanding of quantum systems. See Article p.77

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Figure 1: Probing entropy entanglement in optical lattices.

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Correspondence to Steven Rolston.

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Rolston, S. Getting the measure of entanglement. Nature 528, 48–49 (2015). https://doi.org/10.1038/528048a

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