Nano-optomechanics with ultrasensitive nanowire force sensors

Olivier Arcizet

Institut Néel / CNRS (France)

Olivier Arcizet received his education in physics at ENS in Paris and realized his PhD at Laboratoire Kastler Brossel in 2006 in the group of A. Heidmann in the field of cavity optomechanics. After a postdoctoral stay in Garching, in the group of T. Kippenberg exploring the use of highQ optical microcavities for frequency comb generation, optomechanics and biophysics, he arrived as a CNRS researcher in Grenoble in 2010, at Institut Néel. There he developed research activities focused on ultrasensitive force sensing, cavity nano-optomechanics and hybrid spin qubit-oscillator systems. 


We will present our recent developments in the realisation of ultrasensitive vectorial force field sensors based on suspended silicon carbide nanowires, at room and dilution temperatures [4]. We will introduce a universal measurement method where the lateral 2D force field gradients are determined from the modifications of the nanowire eigenfrequencies and eigenvector orientations they induce [1,2].
We will then present how those exceptional force sensors can be implemented in a cavity nano-optomechanical experiment [3] where we giant coupling strength achieved opens the road towards optomechanical experiments in the single photon regime.

[1] L. Mercier de Lépinay et al, Nature Nanotech. 12, 156 (2017)
[2] L. Mercier de Lépinay et al, Nature Comm. 9, 1401(2018)
[3] F. Fogliano et al, arxiv 1904.01140 (2019)
[4] F. Fogliano et al, arxiv:200902912