Decoherence-free subspace and disentanglement dynamics for two qubits in a common non-Markovian squeezed reservoir
arXiv:1007.3792 · doi:10.1103/PhysRevA.82.022103
Abstract
We study the non-Markovian entanglement dynamics of two qubits in a common squeezed bath. We see remarkable difference between the non-Markovian entanglement dynamics with its Markovian counterpart. We show that a non-Markovian decoherence free state is also decoherence free in the Markovian regime, but all the Markovian decoherence free states are not necessarily decoherence free in the non-Markovian domain. We extend our calculation from squeezed vacuum bath to squeezed thermal bath, where we see the effect of finite bath temperatures on the entanglement dynamics.
To appear in Phys. Rev. A (8 pages)
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