진승범 김용수 이상민 2024-01-19T13:03:38Z 2024-01-19T13:03:38Z 2022-02-17 2021-12 2521-327X https://pubs.kist.re.kr/handle/201004/115965 The indistinguishability of quantum particles is widely used as a resource for the generation of entanglement. Linear quantum networks (LQNs), in which identical particles linearly evolve to arrive at multimode detectors, exploit the indistinguishability to generate various multipartite entangled states by the proper control of transformation operators. However, it is challenging to devise a suitable LQN that carries a specific entangled state or compute the possible entangled state in a given LQN as the particle and mode number increase. This research presents a mapping process of arbitrary LQNs to graphs, which provides a powerful tool for analyzing and designing LQNs to generate multipartite entanglement. We also introduce the perfect matching diagram (PM diagram), which is a refined directed graph that includes all the essential information on the entanglement generation by an LQN. The PM diagram furnishes rigorous criteria for the entanglement of an LQN and solid guidelines for designing suitable LQNs for the genuine entanglement. Based on the structure of PM diagrams, we compose LQNs for fundamental N-partite genuinely entangled states. English VEREIN FORDERUNG OPEN ACCESS PUBLIZIERENS QUANTENWISSENSCHAF Graph Picture of Linear Quantum Networks and Entanglement Article 10.22331/q-2021-12-23-611 1 Quantum, v.5, pp.611 Quantum 5 611 Y scie scopus 000739050300001 2-s2.0-85123001027 Quantum Science & Technology Physics, Multidisciplinary Physics MATCHINGS PERFECT PHOTONS 양자얽힘