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Generation of a four-particle entangled state via cross-Kerr nonlinearity |
Zhao Li-Fang(赵丽芳), Lai Bo-Hui(赖柏辉), Mei Feng(梅锋), Yu Ya-Fei(於亚飞), Feng Xun-Li(冯勋立), and Zhang Zhi-Ming(张智明)† |
Laboratory of Photonic Information Technology, SIPSE and LQIT, South China Normal University, Guangzhou 510006, China |
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Abstract We propose a scheme for generating a genuine four-particle polarisation entangled state |χ00$\rangle$ that has many interesting entanglement properties and potential applications in quantum information processing. In our scheme, we use the weak cross-Kerr nonlinear interaction between field-modes and the non-demolition measurement method based on highly efficient homodyne detection, which is feasible under the current experiment conditions.
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Received: 24 January 2010
Revised: 03 March 2010
Accepted manuscript online:
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 60978009 ), and the National Basic Research Program of China (Grant Nos. 2009CB929604 and 2007CB925204). |
Cite this article:
Zhao Li-Fang(赵丽芳), Lai Bo-Hui(赖柏辉), Mei Feng(梅锋), Yu Ya-Fei(於亚飞), Feng Xun-Li(冯勋立), and Zhang Zhi-Ming(张智明) Generation of a four-particle entangled state via cross-Kerr nonlinearity 2010 Chin. Phys. B 19 094207
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