A scheme is proposed to achieve significantly enhanced quantum estimation of optorotational-coupling (ORC) strength by coupling a driven auxiliary cavity to a Laguerre–Gaussian (L–G) rotational cavity, where the ORC originates from the exchange of orbital angular momentum between a L–G light and rotational mirror. The results indicate that, by appropriately designing the auxiliary-cavity mechanism, the estimation error of the ORC parameter is significantly reduced, and revealing the estimation precision has a much stronger thermal noise and dissipation robustness in comparison with the unassisted case. Our study paves the way toward achieving high-precision quantum sensors.

中文翻译：

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光旋转耦合强度的辅助腔增强量子估计

提出了一种方案，通过将驱动辅助腔耦合到拉盖尔-高斯（L-G）旋转腔来显着增强光旋转耦合（ORC）强度的量子估计，其中ORC源于光旋转耦合之间轨道角动量的交换。 L-G 灯和旋转镜。结果表明，通过适当设计辅助腔机构，ORC参数的估计误差显着减小，且与无辅助情况相比，估计精度具有更强的热噪声和耗散鲁棒性。我们的研究为实现高精度量子传感器铺平了道路。