Generation of a four-particle entangled state via cross-Kerr nonlinearity

doi:10.1088/1674-1056/19/9/094207

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.

Keywords: four-particle entangled state cross-Kerr nonlinearity

Received: 24 January 2010
Revised: 03 March 2010
Accepted manuscript online:

PACS:	4250
	0365
	0367

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).

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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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