Hai-Rui Wei, Bao-Cang Ren, Tao Li, Ming Hua, Fu-Guo Deng
We investigate the dynamics of entanglement for a two-parameter class of states in a hybrid qubit-qutrit system under the influence of various local and multi-local dissipative channels, such as dephasing, phase-flip, bit- (trit-) flip, bit- (trit-) phase-flip, and depolarizing ones. Our results show that entanglement sudden death (ESD) is a general phenomenon and it usually takes place in a qubit-qutrit system interacting with various noisy channels, not only the case with dephasing and depolarizing ones (K. Ann, G. Jaeger, Phys. Lett. A 372 (2008) 579). ESD can only be avoided for some initially entangled states under some particular noisy channels.
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http://arxiv.org/abs/1110.0382
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