Qutrit: entanglement dynamics in the finite qutrit chain in the consistent magnetic field

Details Qutrit: entanglement dynamics in the finite qutrit chain in the consistent magnetic field Qutrit: entanglement dynamics in the finite qutrit chain in the consistent magnetic field

2011-06-12

arxiv.org/abs/1106.2297v1

Physics

Quantum Physics

Scientific paper

Based on the Liouville-von Neumann equation, we obtain closed system of equations for the description of a qutrit or coupled qutrits in arbitrary time-dependent external magnetic field. The dependence of the dynamics on the initial states and magnetic field modulation is studied analytically and numerically. We compare the relative entanglement measure's dynamics in the bi-qutrit system with permutation particle symmetry. We find the magnetic field modulation which retains the entanglement in the system of two coupled qutrits. Analytical formulas for entanglement measures in the chain from 2 to 6 qutrits are presented.

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