{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:22:20Z","timestamp":1760149340686,"version":"build-2065373602"},"reference-count":31,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2023,8,4]],"date-time":"2023-08-04T00:00:00Z","timestamp":1691107200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>For any experiment with two entangled photons, some joint measurement outcomes can have zero probability for a precise choice of basis. These perfect anti-correlations would seem to be a purely quantum phenomenon. It is, therefore, surprising that these very anti-correlations are also evident when the input to the same experiment is analyzed via classical electromagnetic theory. Demonstrating this quantum\u2013classical connection for arbitrary two-photon states and analyzing why it is successful motivates alternative perspectives concerning entanglement, the path integral, and other topics in quantum foundations.<\/jats:p>","DOI":"10.3390\/sym15081539","type":"journal-article","created":{"date-parts":[[2023,8,4]],"date-time":"2023-08-04T09:27:48Z","timestamp":1691141268000},"page":"1539","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Entangled Photon Anti-Correlations Are Evident from Classical Electromagnetism"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4693-2885","authenticated-orcid":false,"given":"Ken","family":"Wharton","sequence":"first","affiliation":[{"name":"Department of Physics and Astronomy, San Jos\u00e9 State University, San Jos\u00e9, CA 95192-0106, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Emily","family":"Adlam","sequence":"additional","affiliation":[{"name":"Schmid College of Science and Technology, Chapman University, Orange, CA 92866, USA"},{"name":"Rotman Institute, University of Western Ontario, London, ON N6A 3K7, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,8,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"032110","DOI":"10.1103\/PhysRevA.75.032110","article-title":"Evidence for the epistemic view of quantum states: A toy theory","volume":"75","author":"Spekkens","year":"2007","journal-title":"Phys. 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