Dispersive coupling between light and a rare-earth ion doped mechanical resonator

Klaus Mølmer (1) , Yann Le Coq (2) , Signe Seidelin (3, 4)

1 Department of Physics and Astronomy [Aarhus]
2 LNE - SYRTE - Laboratoire national de métrologie et d'essais - Systèmes de Référence Temps-Espace
3 NEEL - NOF - Nano-Optique et Forces
4 IUF - Institut universitaire de France

By spectrally hole burning an inhomogeneously broadened ensemble of ions while applying a controlled perturbation, one can obtain spectral holes that are functionalized for maximum sensitivity to different perturbations. We propose to use such hole burnt structures for the dispersive optical interaction with rare-earth ion dopants whose frequencies are sensitive to crystal strain due to the bending motion of a crystal cantilever. A quantitative analysis shows that good optical sensitivity to the bending motion is obtained if a magnetic field gradient is applied across the crystal during hole burning, and that the resulting opto-mechanical coupling strength is sufficient for observing quantum features such as zero point vibrations.

Mots clés: Rare-earth dopants; Mechanical resonator; Optomechanical coupling

Domaines: Physique Quantique [quant-ph]

Klaus Mølmer, Yann Le Coq, Signe Seidelin. Dispersive coupling between light and a rare-earth ion doped mechanical resonator. Physical Review A, 2016, 94 (5), pp.053804. ⟨10.1103/PhysRevA.94.053804⟩. ⟨hal-01350980v2⟩