Generation of 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 phase damping can enhance the generation of entanglement between two optical cavities in some situations and the entanglement between atom and cavities can be controlled by adjusting the detuning parameter. We then investigate the entanglement rate for the system and find that phase damping causes a larger entanglement rate than pure unitary evolution in some situations. Finally, we show that even if the atom is initially 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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