Extremely Broadband Stochastic Resonance of Light and Enhanced Energy Harvesting Enabled by Memory Effects in the Nonlinear Response.
Extremely Broadband Stochastic Resonance of Light and Enhanced Energy Harvesting Enabled by Memory Effects in the Nonlinear Response.
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DOI：
10.1103/physrevlett.126.213901
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发表时间：
2020-08
影响因子：
8.6
通讯作者：
K. Peters;Z. Geng;K. Malmir;J. M. Smith-J. M.-Smith-2125548094;S. Rodriguez
中科院分区：
文献类型：
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作者：
K. Peters;Z. Geng;K. Malmir;J. M. Smith-J. M.-Smith-2125548094;S. Rodriguez
首次观测到非马尔可夫随机共振现象，发现非线性记忆效应极大地扩大了随机共振的带宽。我们的实验系统是一个充油的微腔，它由连续波激光驱动，具有记忆的非线性光学响应。调制腔的长度，同时增加噪声的驱动激光器，我们观察到一个峰值的传输信号噪声比作为噪声方差的函数。通过模拟，我们再现了我们的观察和推断，SR带宽可以在我们的腔比在克尔非线性腔大3000倍。实验证明这种记忆增强的带宽在二十年。作为我们的结果的扩展，我们数值上证明了一个数量级的增强能量收集由于非线性记忆。
We report the first observation of non-Markovian stochastic resonance (SR), and we discover that memory effects in the nonlinearity extremely enlarge the SR bandwidth. Our experimental system is an oil-filled microcavity which, driven by a continuous wave laser, has memory in its nonlinear optical response. Modulating the cavity length while adding noise to the driving laser, we observe a peak in the transmitted signal-to-noise ratio as a function of the noise variance. Through simulations, we reproduce our observations and extrapolate that the SR bandwidth could be ∼3000 times larger in our cavity than in a Kerr-nonlinear cavity. Experiments evidencing this memory-enhanced bandwidth across two decades are presented. As an extension of our results, we numerically demonstrate an order-of-magnitude enhancement in energy harvesting thanks to a nonlinearity with memory.