Chinese Journal of Quantum Electronics, Volume. 27, Issue 1, 69(2010)
Remote controlling for the evolution of atom’s occupancy by using W and GHZ states in the Tavis-Cummings model
Considering that three two-level atoms A, B and C were initially prepared in W or GHZ entangled state and two of them, A and B, interacted resonantly with coherent state field, after cavity QED evolution, Bell-basis measurement was performed on the two atoms inside cavity, through modulating the intensity of the coherent field and the strength of dipole-dipole interaction between atoms, one can controlled the evolution of atom’s occupancy of atom C outside cavity. The results show that the influence on the evolution properties of occupancy of atom C outside cavity is different under selecting different initial state and carrying out different measurement in the same initial state. As increasing the intensity of the coherent field and the strength of dipole-dipole interaction between atoms, the evolution of occupancy of atom C outside cavity can exhibit obviously the collapse-revival phenomenon and the characteristic of increasing of Rabi frequency and lengthening of revival period, etc.
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HAN Feng, MAN Zhong-xiao, XIA Yun-jie. Remote controlling for the evolution of atom’s occupancy by using W and GHZ states in the Tavis-Cummings model[J]. Chinese Journal of Quantum Electronics, 2010, 27(1): 69
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Received: Mar. 24, 2009
Accepted: --
Published Online: May. 31, 2010
The Author Email: HAN Feng (hanfeng8851@163.com)
CSTR:32186.14.