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arXiv 1802.00670cond-mat.mes-hallphysics.app-ph
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纳米线力传感器的相干双模动力学

Coherent two-mode dynamics of a nanowire force sensor

Floris R. Braakman, Nicola Rossi, Gözde Tütüncüoglu, Anna Fontcuberta i Morral, Martino Poggio

摘要:

在力传感的背景下,研究了类似于量子二能级系统的经典相干动力学。我们展示了定量控制的纳米线悬臂梁的两个正交的机械模式之间的耦合,通过测量避免交叉,因为我们确定性地定位纳米线内的电场。此外,我们证明了拉比振荡之间的两个机械模式在强耦合制度。这些结果给出了实现相干双模控制技术的力传感信号增强的前景。

英文摘要:

Classically coherent dynamics analogous to those of quantum two-level systems are studied in the setting of force sensing. We demonstrate quantitative control over the coupling between two orthogonal mechanical modes of a nanowire cantilever, through measurement of avoided crossings as we deterministically position the nanowire inside an electric field. Furthermore, we demonstrate Rabi oscillations between the two mechanical modes in the strong coupling regime. These results give prospects of implementing coherent two-mode control techniques for force sensing signal enhancement.

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