| Generation of any superposition of coherent states along a straight line via resonant atom-cavity interaction |
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| 作者姓名： | 郑仕标 |
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| 作者单位： | Department of Physics and State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002, China |
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| 基金项目： | Project supported by the National
Natural Science Foundation of China (Grant No. 10674025) and the
Doctoral Foundation of the Ministry of Education of China (Grant
No.~20070386002). |
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| 摘 要： | This paper proposes a scheme for generating arbitrary superpositions of several coherent states along a straight line for a cavity mode.In the scheme,several atoms are sent through a cavity initially in a strong coherent state.The superposition of several coherent states with desired coefficients may be generated if each atom is detected in the excited state after it exits the cavity.The scheme is based on resonant atom-cavity interaction and no classical field is required during and after the atom-cavity interaction.Thus,the scheme is very simple and the interaction time is very short,which is important in view of decoherence.
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| 关 键 词： | superposition of coherent states cavity mode resonant interaction |
| 收稿时间： | 2009-06-24 |
| 修稿时间： | 7/5/2009 12:00:00 AM |
Generation of any superposition of coherent states along a straight line via resonant atom－cavity interaction |
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| Zheng Shi-Biao.Generation of any superposition of coherent states along a straight line via resonant atom-cavity interaction[J].Chinese Physics B,2010,19(4):44203-044203. |
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| Authors: | Zheng Shi-Biao |
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| Institution: | Department of Physics and State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002, China |
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| Abstract: | This paper proposes a scheme for generating arbitrary
superpositions of several coherent states along a straight line for
a cavity mode. In the scheme, several atoms are sent through a
cavity initially in a strong coherent state. The superposition of
several coherent states with desired coefficients may be generated
if each atom is detected in the excited state after it exits the
cavity. The scheme is based on resonant atom--cavity interaction and
no classical field is required during and after the atom--cavity
interaction. Thus, the scheme is very simple and the interaction
time is very short, which is important in view of decoherence. |
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| Keywords: | superposition of coherent states cavity mode resonant
interaction |
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