This paper studies sum sideband generation in a parity-time ( ##IMG## [http://ej.iop.org/images/0953-4075/53/15/155403/bab8e54ieqn1.gif] {$\mathcal{PT}$} )-symmetric optomechanical system, where an active cavity is coupled to the passive cavity of a general optomechanical system. We find that the upper and lower sum sideband generation efficiencies can be greatly enhanced by the introduction of the gain cavity. Furthermore, when the coupling coefficient and gain–loss ratio are near the exceptional point, the upper sum sideband amplitude is larger than that of the probe fields. This paper also investigates the optimal matching conditions for upper and lower sum sideband generation in the ##IMG## [http://ej.iop.org/images/0953-4075/53/15/155403/bab8e54ieqn2.gif] {$\mathcal{PT}$} -symmetric phase, the broken ##IMG## [http://ej.iop.org/images/0953-4075/53/15/155403/bab8e54ieqn3.gif] {$\mathcal{PT}$} -symmetric phase and a...

中文翻译：

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奇偶时间对称光机电系统中求和边带的产生和增强

本文研究了奇偶校验时间内的求和边带生成（## IMG ## [http://ej.iop.org/images/0953-4075/53/15/155403/bab8e54ieqn1.gif] {$ \ mathcal {PT } $}）对称光机械系统，其中有源腔耦合到普通光机械系统的无源腔。我们发现，通过引入增益腔，可以大大提高上下边带的产生效率。此外，当耦合系数和增益/损耗比接近例外点时，总和上边带的幅度大于探测场的幅度。本文还研究了## IMG ## [http://ej.iop.org/images/0953-4075/53/15/155403/bab8e54ieqn2.gif] { $ \ mathcal {PT} $}-对称阶段，破损的## IMG ## [http：//ej.iop。