Decoherence-free subspace and disentanglement dynamics for two qubits in a common non-Markovian squeezed reservoir

Details Decoherence-free subspace and disentanglement dynamics for two qubits in a common non-Markovian squeezed reservoir Decoherence-free subspace and disentanglement dynamics for two qubits in a common non-Markovian squeezed reservoir

2010-07-22

arxiv.org/abs/1007.3792v1

Phys. Rev. A 82, 022103 (2010)

Physics

Quantum Physics

To appear in Phys. Rev. A (8 pages)

Scientific paper

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.

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