Correlation between entanglement and spin density in nitrogen-vacancy center of diamond

M. Babamoradi, M. Heidari Saani, A. Ranjbar, M. A. Vesaghi, Yoshiyuki Kawazoe

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)597-603
Number of pages7
JournalEuropean Physical Journal D
Volume65
Issue number3
DOIs
Publication statusPublished - 2011 Dec 1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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