Resource conversion between operational coherence and multipartite entanglement in many-body systems. (29th April 2021)

• Record Type: Journal Article
• Authors: Ren, Li-Hang; Gao, Meng; Ren, Jun; Wang, Z D; Bai, Yan-Kui
• Is Part Of: New journal of physics. Volume 23:Number 4(2021)
• Publication Date: 2021-04-29
• Subjects: quantum coherence -- multipartite entanglement -- operational resource conversion; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/abd9e6
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: We establish a set of resource conversion relationships between quantum coherence and multipartite entanglement in many-body systems, where the operational measures of resource cost and distillation are focused. Under the multipartite incoherent operation, the initial coherence of single-party system bounds the maximal amounts of corresponding operational entanglement in an arbitrary bipartite partition as well as the genuine multipartite entanglement (GME) in many-body systems. Furthermore, the converted multipartite entanglement can be transferred to its subsystems and restored to coherence of a single party by means of local incoherent operations and classical communication, which constitutes a protocol of resource interconversion within the full incoherent operation scenario. As an example, we present a scheme for cyclic interconversion between coherence and GME in three-qubit systems without loss. Moreover, we analyze the property of bipartite and multipartite genuine multi-level entanglement by the initial coherence and investigate multipartite resource dynamics in the conversion.