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arXiv · 2110.07714

Nonlinear Atomic Force Microscopy: Squeezing and Skewness of Micro-Mechanical Oscillators interacting with a Surface

Karl-Peter Marzlin·Bryan Canam·Nisha Rani Agarwal
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Abstract

We propose a two-frequency driving scheme in dynamic atomic force microscopy that maximizes the interaction time between tip and sample. Using a stochastic description of the cantilever dynamics, we predict large classical squeezing and a small amount of skewness of the tip's phase-space probability distribution. Strong position squeezing will require close contact between tip and surface, while momentum squeezing would also be possible in the van der Waals region of the tip-surface force. Employing a generalized Caldeira-Leggett model, we predict that surface-dependent dissipative forces may be the dominant source of quantum effects and propose a procedure to isolate quantum effects from thermal fluctuations.

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Karl-Peter Marzlin, Bryan Canam, Nisha Rani Agarwal. 2021-10-13. Nonlinear Atomic Force Microscopy: Squeezing and Skewness of Micro-Mechanical Oscillators interacting with a Surface. https://doi.org/10.1103/physreva.105.012211

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