Freiburg 2019 – wissenschaftliches Programm

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FM: Fall Meeting

FM 53: Enabling Technologies: Sources of Quantum States of Light III

FM 53.7: Talk

Mittwoch, 25. September 2019, 15:45–16:00, 1010

Imaging quantum emitters with parabolic mirrors — •Markus Sondermann1,2 and Gerd Leuchs1,2,31Friedrich-Alexander-University of Erlangen-Nürnberg, Department of Physics, Germany — 2Max Planck Institute for the Science of Light, Erlangen, Germany — 3Department of Physics, University of Ottawa, Canada

Quantum emitters naturally radiate photons into the full solid angle. Therefore, in our experiments we collect the photons emitted by such sources with a deep parabolic mirror. This enables the imaging of the full spherical emission pattern onto a plane or, alternatively, the localization of the source with high spatial precision.

We discuss two examples of applications that benefit from such a set-up. The first one is imaging a single ion held in a radio frequency trap and determining its temperature as well as the excess heating rate, including the case of extremely weak excitation of the ion. The second example treats the imaging of nano-rod quantum-emitters held in an optical trap. Here, the imaging process enables the verification of the alignment of such rods along the electric field of the trap laser and yields the decomposition of the nano-rod emission into its constituting linear and circular dipole components.

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