Title : ( Thermal entanglelment in a two-qutrit system with nonlinear coupling under nonuniform external magnetic field )
Authors: Iman Sargolzahi , sayed yahya mirafzali , Mohsen Sarbishaei ,
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Abstract
We study the thermal entanglement of a 2-qutrit spin chain with nonlinear coupling in the presence of nonuniform magnetic field. Thermal entanglement of an arbitrary (finite-dimensional) m-partite system vanishes at some finite threshold temperature Ts. We investigate the dependence of Ts on the system’s parameters, i.e. the nonlinear coupling and the magnetic field, for this 2-qutrit system. In addition, we compare two lower bounds of I-concurrence for this system and also study its dense coding capacity as a function of system’s parameters.
Keywords
, Thermal entanglement; negativity; I, concurrence; dense coding capacity.
@article{paperid:1008455,
author = {Sargolzahi, Iman and Mirafzali, Sayed Yahya and Sarbishaei, Mohsen},
title = {Thermal entanglelment in a two-qutrit system with nonlinear coupling under nonuniform external magnetic field},
journal = {International Journal of Quantum Information},
year = {2008},
volume = {6},
number = {4},
month = {October},
issn = {0219-7499},
pages = {867--884},
numpages = {17},
keywords = {Thermal entanglement; negativity; I-concurrence; dense coding capacity.},
}
%0 Journal Article
%T Thermal entanglelment in a two-qutrit system with nonlinear coupling under nonuniform external magnetic field
%A Sargolzahi, Iman
%A Mirafzali, Sayed Yahya
%A Sarbishaei, Mohsen
%J International Journal of Quantum Information
%@ 0219-7499
%D 2008
