In a recently published paper, we highlighted how the internal temperature of a levitated nanodiamond impacts its motion, an effect known as hot Brownian motion.
To measure the diamond internal temperature, we used NV centers, point-like defects of the diamond matrix, that act as nano-thermometers. We simultaneously record the nanodiamond motion with an interferometric setup. This allows us to model the link between the nanodiamond motion and temperature.
Our work demonstrates the efficiency of optical levitation for the study of material science at the single nanoparticle level and helps to understand nanodiamonds dynamics in optical traps. This latest constitutes a necessary step toward using levitated diamonds for tests of macroscopic quantum physics.
More information: https://pubs.acs.org/doi/10.1021/acsphotonics.1c01642
