Stability of pairwise entanglement in a decoherent environment

Jian-Ming Cai, Zheng-Wei Zhou, Guang-Can Guo
2005 Physical Review A. Atomic, Molecular, and Optical Physics  
Consider the dynamics of a two-qubit entangled system in the decoherence environment, we investigate the stability of pairwise entanglement under decoherence. We find that for different decoherence models, there exist some special class of entangled states of which the pairwise entanglement is the most stable. The lifetime of the entanglement in these states is larger than other states with the same initial entanglement. In addition, we also investigate the dynamics of pairwise entanglement in
more » ... he ground state of spin models such as Heisenberg and XXY models.
doi:10.1103/physreva.72.022312 fatcat:vuxtoxns2vbi5ngamr75cuweam