Coherent two-mode dynamics of a nanowire force sensor

TL;DR

This paper demonstrates control and coherent manipulation of two mechanical modes in a nanowire force sensor, showing potential for enhanced force sensing through quantum-like two-mode dynamics.

Contribution

It introduces a method to achieve and measure coherent two-mode dynamics in a nanowire, enabling advanced control techniques for force sensing applications.

Findings

Quantitative control over mode coupling via electric field positioning.

Observation of Rabi oscillations in mechanical modes.

Potential for improved force sensing through coherent control.

Abstract

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.