| Continuous Variable Entanglement and Violation of Bell Inequality for Two Modes in a Three-Level Cascade Atomic System |
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| 作者姓名： | 平云霞 成泽 |
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| 作者单位： | Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 10174024 and 10474025. |
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| 摘 要： | Continuous variable entanglement and violation of Bell inequality for two modes are investigated in a three-level cascade atomic system. Entanglement of the system is demonstrated according to the entanglement criterion Phys. Rev. Lett. 84 （2000）2722]. Violation of Bell inequality is studied within the framework of a quantum theory of multiwave mixing. It is shown that there are some states that are entangled but do not violate the Bell inequality.
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| 关 键 词： | 变量 三量子位纠缠系统 不等式 原子结构 |
| 收稿时间： | 2006-10-24 |
| 修稿时间： | 2006-10-24 |
Continuous Variable Entanglement and Violation of Bell Inequality for Two Modes in a Three-Level Cascade Atomic System |
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| PING Yun-Xia,CHENG Ze.Continuous Variable Entanglement and Violation of Bell Inequality for Two Modes in a Three-Level Cascade Atomic System[J].Chinese Physics Letters,2007,24(3):609-612. |
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| Authors: | PING Yun-Xia CHENG Ze |
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| Affiliation: | Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 |
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| Abstract: | Continuous variable entanglement and violation of Bell inequality for two modes are investigated in a three-level cascade atomic system. Entanglement of the system is demonstrated according to the entanglement criterion Phys. Rev. Lett. 84(2000)2722]. Violation of Bell inequality is studied within the framework of a quantum theory of multiwave mixing. It is shown that there are some states that are entangled but do not violate the Bell inequality. |
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| Keywords: | 03 67 Mn 42 50 Dv |
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