摘要目的研究任意多态叠加多模叠加态光场的广义非线性等幂次差压缩特性，从理论上导出该光场呈现高次差压缩的条件。

• Aim To find out the squeezing conditions theoretically and the properties of equal-power nonlinear difference squeezing in multimode radiation field with any amount of states superposing studied.