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Systems of quantum objects can be characterized by the correlations between the objects. A technique has been developed to precisely measure even the most delicate correlations, allowing theoretical models of quantum systems to be tested. See Schweigler et al.
Spielman, I.
(2017),
Quantum theory solved by experiment, Nature, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=923463
(Accessed October 21, 2025)