Thermometry of an optically levitated nanodiamond

Thermométrie d'un nanodiamant en lévitation optique

François Rivière (1, 2) , Timothée de Guillebon (1, 2) , Léo Maumet (1, 2) , Gabriel Hétet (3) , Martin Schmidt (1) , Jean-Sébastien Lauret (1, 2) , Loïc Rondin (1, 2)

1 LuMIn - Laboratoire Lumière, Matière et Interfaces
2 NOOS - Nano Optique et Spectroscopy
3 Nano-Optique

Using the spin properties of nitrogen-vacancy (NV) centers in levitated diamonds, we characterize the absorption of single nanodiamonds. We first calibrate the thermometry response of the NV centers embedded in our nanodiamonds. Then, using this calibration, we estimate the absorption cross-section of single levitated nanodiamonds. We show that this absorption is extrinsic and dominated by volumic effects. Our work opens the way to diamond material optimization for levitation quantum experiments. It also demonstrates optical levitation as a unique platform to characterize material thermal properties at the nanoparticle level.

Domaines: Physique [physics]; Optique [physics.optics]

François Rivière, Timothée de Guillebon, Léo Maumet, Gabriel Hétet, Martin Schmidt, et al.. Thermometry of an optically levitated nanodiamond. AVS Quantum Science, 2022, 4 (3), pp.030801. ⟨10.1116/5.0093600⟩. ⟨hal-03713587⟩