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

Md Manirul Ali, Po Wen Chen, Hsi Sheng Goan

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22 Citations (Scopus)

Abstract

We study the non-Markovian entanglement dynamics of two qubits in a common squeezed bath. We see a remarkable difference between the non-Markovian entanglement dynamics and 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 a squeezed vacuum bath to a squeezed thermal bath, where we see the effect of finite bath temperatures on the entanglement dynamics.

Original languageEnglish
Article number022103
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume82
Issue number2
DOIs
Publication statusPublished - 2010 Aug 11

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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