Entanglement sudden death of two atoms interacting with a cavity via the two-photon process in a strong-driving-assisted system |
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| Authors: | Chen Li Shao Xiao-Qiang and Zhang Shou |
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| Affiliation: | Department of Physics, College of Science, Yanbian University, Yanji 133002, China;Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | We examine the entanglement dynamics between two strongly
driven atoms off-resonantly coupled with a single-mode cavity via
the two-photon process with the help of negativity in two different
types of initial states. The results show that entanglement sudden
death may occur under both the above conditions and the sudden death
effect can be monitored by modulating the atom--cavity detunings.
Furthermore, we also find an atomic decoherence-free subspace so
that the initial entanglement between two atoms remains invariable
in application. |
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| Keywords: | entanglement sudden death negativity atom--cavity
detuning decoherence-free subspace |
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