Measuring ion oscillations at the quantum level with fluorescence light
- URL: http://arxiv.org/abs/2009.14098v1
- Date: Tue, 29 Sep 2020 15:27:29 GMT
- Title: Measuring ion oscillations at the quantum level with fluorescence light
- Authors: G. Cerchiari, G. Araneda, L. Podhora, L. Slodi\v{c}ka, Y. Colombe and
R. Blatt
- Abstract summary: We demonstrate an optical method for detecting the mechanical oscillations of an atom with single-phonon sensitivity.
Results could be applied for motion detection of other light scatterers of fundamental interest, such as trapped nanoparticles.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We demonstrate an optical method for detecting the mechanical oscillations of
an atom with single-phonon sensitivity. The measurement signal results from the
interference between the light scattered by a single trapped atomic ion and
that of its mirror image. The motion of the atom modulates the interference
path length and hence the photon detection rate. We detect the oscillations of
the atom in the Doppler cooling limit and reconstruct average trajectories in
phase space. We demonstrate single-phonon sensitivity near the ground state of
motion after EIT cooling. These results could be applied for motion detection
of other light scatterers of fundamental interest, such as trapped
nanoparticles.
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