Barros, Mariana R. Chin, Seungbeom Pramanik, Tanumoy Lim, Hyang-Tag Cho, Young-Wook Huh, Joonsuk Kim, Yong-Su 2024-01-19T16:01:08Z 2024-01-19T16:01:08Z 2022-01-10 2020-12-07 1094-4087 https://pubs.kist.re.kr/handle/201004/117691 Particle identity and entanglement are two fundamental quantum properties that work as major resources for various quantum information tasks. However, it is still a challenging problem to understand the correlation of the two properties in the same system. While recent theoretical studies have shown that the spatial overlap between identical particles is necessary for nontrivial entanglement, the exact role of particle indistinguishability in the entanglement of identical particles has never been analyzed quantitatively before. Here, we theoretically and experimentally investigate the behavior of entanglement between two bosons as spatial overlap and indistinguishability simultaneously vary. The theoretical computation of entanglement for generic two bosons with pseudospins is verified experimentally in a photonic system. Our results show that the amount of entanglement is a monotonically increasing function of both quantities. We expect that our work provides an insight into deciphering the role of the entanglement in quantum networks that consist of identical particles. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement English OPTICAL SOC AMER IDENTICAL PARTICLES ENTANGLEMENT SYSTEMS STATE Entangling bosons through particle indistinguishability and spatial overlap Article 10.1364/OE.410361 1 OPTICS EXPRESS, v.28, no.25, pp.38083 - 38092 OPTICS EXPRESS 28 25 38083 38092 scie scopus 000596707100079 2-s2.0-85097458588 Optics Optics Article IDENTICAL PARTICLES ENTANGLEMENT SYSTEMS STATE 양자얽힘 양자정보 양자광학