Eigenmode orthogonality breaking and anomalous dynamics in multimode nano-optomechanical systems under non-reciprocal coupling.
Eigenmode orthogonality breaking and anomalous dynamics in multimode nano-optomechanical systems under non-reciprocal coupling.
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DOI：
10.1038/s41467-018-03741-8
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发表时间：
2018-04-11
影响因子：
16.6
通讯作者：
Arcizet O
中科院分区：
文献类型：
--
作者：
Mercier de Lépinay L;Pigeau B;Besga B;Arcizet O
纳米机械探针的热运动直接影响其对外力的灵敏度。因此，正确理解它对于最终的力感测至关重要。在这里，我们研究了一种矢量力场传感器：单夹纳米线沿沿着两个准频率简并横向振荡。它的插入旋转光学力场耦合其本征模非对称，导致其机械性能的显着修改。特别是，本征模失去了其固有的正交性。我们表明，这种情况是在起源的异常过剩的噪音和违反的波动耗散关系。我们的模型，定量占所有的观察，提供了一个新的修改版本的波动耗散定理，仍然有效的非保守的旋转力场，并揭示了非轴向的机械性能的突出作用。这些发现有助于理解非耦合多模系统中热涨落的有趣特性。了解纳米机械探针的动力学对于提高高灵敏度力场传感是重要的。在这里，作者研究了悬浮纳米线的振动中存在的旋转光学力场，打破了纳米谐振器本征模的正交性。
Thermal motion of nanomechanical probes directly impacts their sensitivities to external forces. Its proper understanding is therefore critical for ultimate force sensing. Here, we investigate a vectorial force field sensor: a singly-clamped nanowire oscillating along two quasi-frequency-degenerate transverse directions. Its insertion in a rotational optical force field couples its eigenmodes non-symmetrically, causing dramatic modifications of its mechanical properties. In particular, the eigenmodes lose their intrinsic orthogonality. We show that this circumstance is at the origin of an anomalous excess of noise and of a violation of the fluctuation dissipation relation. Our model, which quantitatively accounts for all observations, provides a novel modified version of the fluctuation dissipation theorem that remains valid in non-conservative rotational force fields, and that reveals the prominent role of non-axial mechanical susceptibilities. These findings help understand the intriguing properties of thermal fluctuations in non-reciprocally-coupled multimode systems. Understanding the dynamics of nanomechanical probes is important for improving high-sensitivity force field sensing. Here, the authors study the vibrations of a suspended nanowire in the presence of a rotational optical force field which breaks the orthogonality of the nanoresonator eigenmodes.
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影响因子：
8.6
作者：
ASHKIN, A
通讯作者：
ASHKIN, A
影响因子：
18.1
作者：
KUBO, R
通讯作者：
KUBO, R
影响因子：
19.6
作者：
Arcizet, O.;Jacques, V.;Seidelin, S.
通讯作者：
Seidelin, S.
影响因子：
38.3
作者：
Gieseler, Jan;Quidant, Romain;Novothy, Lukas
通讯作者：
Novothy, Lukas
影响因子：
38.3
作者：
de Lepinay, Laure Mercier;Pigeau, Benjamin;Arcizet, Olivier
通讯作者：
Arcizet, Olivier