Entangling three identical particles via spatial overlap
Posted on 2022-08-04 - 18:30
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.
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LEE, DongHwa; Pramanik, Tanumoy; Hong, Seongjin; Cho, Young-Wook; Lim, Hyang-Tag; Chin, Seungbeom; et al. (2022). Entangling three identical particles via spatial overlap. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.6119670.v2
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AUTHORS (7)
DL
DongHwa LEE
TP
Tanumoy Pramanik
SH
Seongjin Hong
YC
Young-Wook Cho
HL
Hyang-Tag Lim
SC
Seungbeom Chin
YK
Yong-Su Kim