论文标题
布朗运动在光学镊子中的噪声和偏僻的特性：查看维纳和ornstein-uhlenbeck工艺之间的交叉
Noise and ergodic properties of Brownian motion in an optical tweezer: looking at the crossover between Wiener and Ornstein-Uhlenbeck processes
论文作者
论文摘要
我们在光学陷阱的整个光谱范围内表征了播放时噪声的性质以及过度抑制了过度拖动的单个微球的相应布朗运动的千古特性，并比较了实验，分析和模拟数据。我们使用Allan差异仔细分析了噪声和千古属性$（i）$，用于表征噪声，并利用用于在有限时间进行实验的量像测试的测试。我们在低频Ornstein-Uhlenbeck捕获扩散方案中得出了这两个可观察力，并在分析上对高频WIENER自由扩散方案进行了分析研究，这与模拟和实验性结果非常吻合。这导致揭示了与这两种政权的独特特征相关的噪声和偏僻的光谱特征。
We characterize throughout the spectral range of an optical trap the nature of the noise at play and the ergodic properties of the corresponding Brownian motion of an overdamped trapped single microsphere, comparing experimental, analytical and simulated data. We carefully analyze noise and ergodic properties $(i)$ using the Allan variance for characterizing the noise and $(ii)$ exploiting a test of ergodicity tailored for experiments done over finite times. We derive these two observables in the low-frequency Ornstein-Uhlenbeck trapped-diffusion regime and study analytically their evolution towards the high-frequency Wiener free-diffusion regime, in a very good agreement with simulated and experimental results. This leads to reveal noise and ergodic spectral signatures associated with the distinctive features of both regimes.
