| Preparing quantum vortex states with odd Schrdinger cat states through a coupled waveguide system |
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| 引用本文： | 唐慧琴,李绍新,朱开成,唐英,郑小娟.Preparing quantum vortex states with odd Schrdinger cat states through a coupled waveguide system[J].中国物理 B,2013(7):197-201. |
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| 作者姓名： | 唐慧琴 李绍新 朱开成 唐英 郑小娟 |
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| 摘 要： |
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| 关 键 词： | odd Schro¨dinger cat state quantum vortex state coupled waveguide |
Preparing quantum vortex states with odd Schrdinger cat states through a coupled waveguide system |
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| Tang Hui-Qin,Li Shao-Xin,Zhu Kai-Cheng,Tang Ying,Zheng Xiao-Juan.Preparing quantum vortex states with odd Schrdinger cat states through a coupled waveguide system[J].Chinese Physics B,2013(7):197-201. |
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| Authors: | Tang Hui-Qin Li Shao-Xin Zhu Kai-Cheng Tang Ying Zheng Xiao-Juan |
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| Affiliation: | [1]school of Physics and Electronics, Central South University, Changsha 410083, China [2]Physical Staff Room, Guangdong Medical College, Dongguan 523808, China |
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| Abstract: | A scheme is proposed for preparing a quantum vortex state with a coupled waveguide, in which a single-mode odd cat state with weak intensity and a single-mode coherent state are inserted in the input ports, respectively. The analytical wavefunction of the resulting state in the quadrature space is derived, and the vortex structure of the output state is analyzed. It is found that the obtained states, which may carry a vortex with topological charge index one, are entangled and nonclassical, depending only on the scaled propagation time and the weak intensity of the input odd cat state instead of the displacement parameter of the input coherent state. The phase distribution, however, in the quadrature space, depends on the displacement parameter of the input coherent state |
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| Keywords: | odd Schro¨dinger cat state quantum vortex state coupled waveguide |
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