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Detection of multipartite entanglement based on Heisenberg-Weyl representation of density matrices (2205.15493v1)
Published 31 May 2022 in quant-ph
Abstract: We study entanglement and genuine entanglement of tripartite and four-partite quantum states by using Heisenberg-Weyl (HW) representation of density matrices. Based on the correlation tensors in HW representation, we present criteria to detect entanglement and genuine tripartite and four-partite entanglement. Detailed examples show that our method can detect more entangled states than previous criteria.