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Interconversion between block coherence and multipartite entanglement in many-body systems
- Source :
- New J. Phys. 26, 073037 (2024)
- Publication Year :
- 2024
-
Abstract
- Coherence is intrinsically related to projective measurement. When the fixed projective measurement involves higher-rank projectors, the coherence resource is referred to as block coherence, which comes from the superposition of orthogonal subspaces. Here, we establish a set of quantitative relations for the interconversion between block coherence and multipartite entanglement under the framework of the block-incoherent operations. It is found that the converted multipartite entanglement is upper bounded by the initial block coherence of single-party system. Moreover, the generated multipartite entanglement can be transferred to its subsystems and restored to block coherence of the initial single-party system by means of local block-incoherent operations and classical communication. In addition, when only the coarse-grained quantum operations are accessible for the ancillary subsystems, we further demonstrate that a lossless resource interconversion is still realizable, and give a concrete example in three four-level systems. Our results provide a versatile approach to utilize different quantum resources in a cyclic fashion.
- Subjects :
- Quantum Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- New J. Phys. 26, 073037 (2024)
- Publication Type :
- Report
- Accession number :
- edsarx.2404.13526
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1088/1367-2630/ad602b