@article { author = {Naji, Azita and Shadman, N.}, title = {Generation of Entanglement in Qutrit Spin Coherent States by Nonlinear Hamiltonian}, journal = {Journal of Sciences, Islamic Republic of Iran}, volume = {32}, number = {4}, pages = {359-365}, year = {2021}, publisher = {University of Tehran}, issn = {1016-1104}, eissn = {2345-6914}, doi = {10.22059/jsciences.2022.325672.1007653}, abstract = {We study entanglement in coherent spin states and several superpositions of multi-qutrit coherent states evolved under the one-axis counter-twisting Hamiltonian in the presence and absence of a magnetic field. Considering a non-entangled multi-qutrit spin coherent state as an initial one, it is found that the entanglement is instigated with an oscillatory behavior in time; however, its average is a decreasing function of the magnetic field. Also, we observe that under this Hamiltonian, the two-qutrit superposed state retains its maximum entanglement with no change, while, the negativity for the three-qutrit superposed state oscillates in time and its average increases in the presence of the magnetic field.}, keywords = {Entanglement,Qutrit,Coherent states,One-axis counter-twisting Hamiltonian}, url = {https://jsciences.ut.ac.ir/article_85329.html}, eprint = {https://jsciences.ut.ac.ir/article_85329_6a47140ed84247b226c70f96b0bf4988.pdf} }