We investigate spin squeezing in Bose–Einstein condensate with three-body interaction. By using the short-time approximation, we analytically and numerically calculate the spin squeezing parameter. Its shown that increased squeezing can be achieved by increasing the number of atoms, two- and three-body interactions and Josephson-like coupling. Its also shown that three-body interaction causes increased squeezing than two-body interaction.

中文翻译：

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三体相互作用的玻色-爱因斯坦凝聚物中的自旋挤压

我们研究了具有三体相互作用的Bose-Einstein冷凝物中的自旋挤压。通过使用短时近似，我们可以对旋转压缩参数进行解析和数值计算。结果表明，可以通过增加原子数，两体和三体相互作用以及类似于约瑟夫森的耦合来实现增加的压缩。它也表明，三体相互作用比两体相互作用引起的挤压增加。