Qutrit Teleportation and Entanglement Evolved by the One-Axis Counter-Twisting Hamiltonian under the Intrinsic Decoherence

In this paper, we study the entanglement and quantum teleportation of a two-qutrit state evolved under one-axis counter-twisting Hamiltonian with the intrinsic decoherence effects. The entanglement and fidelity are analyzed as a function of decoherence rate, Hamiltonian coefficient, and magnetic field. It has been seen that the system is constantly entangled. Both the decoherence rate and the Hamiltonian coefficient have a negative correlation with the entanglement and fidelity. The faithfulness and negativity are efficiently optimized by the magnetic fields. We deduced that we can acquire some best fidelity for the system when it is maximally entangled.