We consider $N$ two-level atoms in a ring cavity interacting with a broadband squeezed vacuum centered at frequency $\omega_{s}$ and an input monochromatic driving field at frequency $\omega $. We show that, besides the central mode (at $\o$), many other {\em sideband modes} are produced at the output, with frequencies shifted from $\omega $ by multiples of $ 2(\omega -\omega_{s})$. Here we analyze the optical bistability of the two nearest sideband modes, one red-shifted and the other blue-shifted.
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机译：我们认为环形腔中的$ N $个两级原子与以频率\\ omega_ {s} $为中心的宽带压缩真空和频率为\\ omega $的输入单色驱动场相互作用。我们证明，除了中央模式（在$ \ o $处），在输出处还产生了许多其他{\ em边带模式}，频率从$ \ omega $偏移了2美元的倍数（\ omega-\ omega_ { s}）$。在这里，我们分析了两个最近的边带模式的光学双稳态，一个是红移的，另一个是蓝移的。
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