ua nt - p h / 03 03 02 6 v 2 7 M ar 2 00 3 Entanglement with phase damping
نویسندگان
چکیده
The system of an atom couples to two distinct optical cavities with phase damping is studied by making use of a dynamical algebraic method. We adopt the concurrence to characterize the entanglement between atom and cavities or between two optical cavities in the presence of the phase damping. It is found that the entanglement between atom and cavities can be controlled by adjusting the detuning parameter. Finally, we show that even if the atom is initially prepared in a maximally mixed state, it can also entangle the two mode cavity fields. PACS numbers: 03.67.Mn, 03.67.-a, 03.65.Fd
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