论文标题
强烈驱动纳米孔子对探针场的响应中挤压的放大和光谱证据
Amplification and spectral evidence of squeezing in the response of a strongly driven nanoresonator to a probe field
论文作者
论文摘要
由于其较小的衰减速率，纳米力学模式使能够研究强烈的非线性现象，以进行中等强大的谐振驾驶。在这里，我们研究了驱动谐振器对附加探针场的响应。我们通过实验证明了探针场的共振扩增和共振吸收。相应的光谱峰位于强驱动频率的相对侧。即使不适用波动散引血定理，我们也表明对探针场的响应使我们能够表征有关强制振荡稳定状态的波动的挤压。我们的两色调实验是在经典制度中进行的，但是我们的发现也应同样适用于量子波动。用量子术语，观察到的响应归因于多光子过程。从响应光谱中提取的挤压参数与无自由参数的计算值非常一致。
Because of their small decay rates, nanomechanical modes enable studying strongly nonlinear phenomena for a moderately strong resonant driving. Here we study the response of a driven resonator to an additional probe field. We experimentally demonstrate resonant amplification and resonant absorption of the probe field. The corresponding spectral peaks lie on the opposite sides of the strong-drive frequency. Even though the fluctuation-dissipation theorem does not apply, we show that the response to the probe field allows us to characterize the squeezing of fluctuations about the stable states of forced oscillations. Our two-tone experiment is done in the classical regime, but our findings should equally apply to quantum fluctuations as well. In quantum terms, the observed response is due to multiphoton processes. The squeezing parameter extracted from the spectra of the response is in excellent agreement with the calculated value with no free parameters.
