caa a22 4500 445866780 CHVBK 20180317145500.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1140/epjd/e2011-20335-5 doi (NATIONALLICENCE)springer-10.1140/epjd/e2011-20335-5 Correlation between entanglement and spin density in nitrogen-vacancy center of diamond [Elektronische Daten] [M. Babamoradi, M. Heidari Saani, A. Ranjbar, M. Vesaghi, Y. Kawazoe] Many-body wavefunctions were utilized to calculate von Neumann's entropy as an entanglement measurement for neutral and negatively charged nitrogen vacancy (NV) centers in diamond. A generalized Hubbard Hamiltonian which considers e-e interaction terms completely was used to calculate many-electron wavefunctions of the ground and excited states. Correlation between entanglement and spin density distributed on neighboring atoms of NV is presented. The behavior of spin density and entanglement under relaxations of neighboring atoms is the same for all investigated ground and excited states. The results suggest that the spin density may be used to quantify the entanglemnt and vice versa. EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2011 Babamoradi M. Department of Physics, Sharif University of Technology, P. O. Box: 11365-9161, Tehran, Iran aut Heidari Saani M. Physics group, Maleke Ashtar University, Isfahan, P. O. Box: 83145-115, Shahin Shahr, Iran aut Ranjbar A. Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut Vesaghi M. Department of Physics, Sharif University of Technology, P. O. Box: 11365-9161, Tehran, Iran aut Kawazoe Y. Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut The European Physical Journal D Springer-Verlag 65/3(2011-12-01), 597-603 1434-6060 65:3<597 2011 65 10053 https://doi.org/10.1140/epjd/e2011-20335-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2011-20335-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Babamoradi M. Department of Physics, Sharif University of Technology, P. O. Box: 11365-9161, Tehran, Iran aut NATIONALLICENCE 700 1- Heidari Saani M. Physics group, Maleke Ashtar University, Isfahan, P. O. Box: 83145-115, Shahin Shahr, Iran aut NATIONALLICENCE 700 1- Ranjbar A. Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut NATIONALLICENCE 700 1- Vesaghi M. Department of Physics, Sharif University of Technology, P. O. Box: 11365-9161, Tehran, Iran aut NATIONALLICENCE 700 1- Kawazoe Y. Institute for Materials Research, Tohoku University, 980-8577, Sendai, Japan aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 65/3(2011-12-01), 597-603 1434-6060 65:3<597 2011 65 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer