| The preparation of multi-particle entanglement and the multi-particle interference at the situation of low temperature and detuning are discussed for the cavity QED systems. Approximation methods are applied in obtaining the effective interactions. The practical scheme to prepare multi-particle entanglement is given, in which the creation and disappearance of interference can be demonstrated. In this paper, the comparison of multi-particle interference with the spontaneous interference of momentum is given. Creation and disappearance of interference are explained qualitatively and the uncertainty in the spontaneous interference is given quantitatively. |
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