2019/01/23 by I. M. Carvalho, O. Rojas, Onofre Rojas +7
Computer Science · Physics and Astronomy · #FOS: Physical sciences #Neural Networks and Reservoir Computing #Quantum Physics (quant-ph) #Quantum and electron transport phenomena #Quantum many-body systems #quant-ph
paper · pdf · doi:10.48550/arxiv.1901.07690
7 pages, 5 figures
arxiv created 2019/01/23 · openalex publication_date 2019/01/23 · arxiv updated 2019/01/24 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
We study the local thermal entanglement in a spin-1/2 Ising-XXZ diamond structure with two impurities. In this spin chain, we have the two impurities with an isolated XXZ dimer between them. We focus on the study of the thermal entanglement in this dimer. The main goal of this paper is to provide a good understanding of the effect of impurities in the entanglement of the model. This model is exactly solved by a rigorous treatment based on the transfer-matrix method. Our results show that the entanglement can be tuned by varying the impurities parameters in this system. In addition, it is shown that the thermal entanglement for such a model exhibits a clear performance improvement when we control and manipulate the impurities compared to the original model without impurities. Finally, the impurities can be manipulated to locally control the thermal entanglement, unlike the original model where it is done globally.