Lee, Donghwa Pramanik, Tanumoy Hong, Seongjin Cho, Young Wook Lim, Hyang-Tag Chin, Seungbeom Kim, Yong-Su 2024-01-19T11:31:38Z 2024-01-19T11:31:38Z 2022-09-02 2022-08 1094-4087 https://pubs.kist.re.kr/handle/201004/114800 Quantum correlations between identical particles are at the heart of quantum technologies. Several studies with two identical particles have shown that the spatial overlap and indistinguishability between the particles are necessary for generating bipartite entanglement. On the other hand, researches on the extension to more than two-particle systems are limited by the practical difficulty to control multiple identical particles in laboratories. In this work, we propose schemes to generate two fundamental classes of genuine tripartite entanglement, i.e., GHZ and W classes, which are experimentally demonstrated using linear optics with three identical photons. We also show that the tripartite entanglement class decays from the genuine entanglement to the full separability as the particles become more distinguishable from each other. Our results support the prediction that particle indistinguishability is a fundamental element for entangling identical particles. (C) 2022 Optics Publishing Group under the terms of the Optica Open Access Publishing Agreement English Optical Society of America Entangling three identical particles via spatial overlap Article 10.1364/OE.460866 1 Optics Express, v.30, no.17, pp.30525 - 30535 Optics Express 30 17 30525 30535 Y scie scopus 000842044600055 Optics Optics Article QUANTUM ENTANGLEMENT INDISTINGUISHABILITY