Robust scheme for the preparation of symmetric Dicke states with coherence state via cross-Kerr nonlinearity |
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Authors: | Chunran Zhao Liu Ye |
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Institution: | a School of Physics & Material Science, Anhui University, Hefei 230039, PR Chinab School of Physics & Electronic Information, Huaibei Normal University, Huaibei 235000, PR China |
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Abstract: | A scheme is proposed for generating multiphoton maximally entangled states among four modes. These schemes only use Kerr medium and polarization beam splitters and P homodyne measurements on coherent light fields, which can be efficiently implemented in quantum optical laboratories. It's comparatively easy to realize symmetric Dicke state of light fields in the scheme. The scheme can be generalized to produce N-qubit maximally entangled states. |
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Keywords: | Dicke state Cross-Kerr nonlinearity Homodyne measurement |
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