Data for generating the figures of "Strong coupling and dark modes in the motion of a pairof levitated nanoparticles" https://doi.org/10.1103/t33b-f1b2

We experimentally investigate a system composed of two levitating nanospheres whose motions<br>are indirectly coupled via coherent scattering in a single optical cavity mode. The nanospheres<br>are loaded into a double longitudinal tweezer created with two lasers at different wavelengths,<br>where chromatic aberration leads to the formation of two separate trapping sites. We achieve<br>strong coupling between each pair of modes in the transverse plane of the tweezer, and we show<br>the emergence of dark modes in the overall coupled motion. The observed features are ubiquitous<br>in a variety of classical and quantum systems. As such, our experiment will allow us to explore<br>the classical analog of typically quantum dynamics, and in further developments to investigate the<br>transition to the quantum domain.<br>