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Q: Fachverband Quantenoptik und Photonik

Q 62: Poster: Quantum Optics and Photonics V

Q 62.77: Poster

Donnerstag, 8. März 2018, 16:15–18:15, Redoutensaal

Collective light-matter interaction in the presence of spin-orbit coupling of light — •Zaneta Kurpias, Stefan Walser, Jürgen Volz, and Arno Rauschenbeutel — Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien

In strongly confined light fields, spin-orbit coupling of light leads to an inherent link between the light's local polarization and its propagation direction. This can lead to chirality, i.e. direction dependent interaction between light and matter [1]. In a previous experiment we showed that spin-orbit coupling of light leads to systematic wavelength-scale position errors when imaging subwavelength-scale particles in a microscopy setup. To measure this effect we image a single gold nano-particle with an optical microscope. Using centroid-fitting techniques, we observed a shift between the emitter's measured and actual position. This difference depends on the polarization of the light emitted by the particle and is comparable to the optical wavelength.

In the next step, we plan to expand our current setup to study light-matter interactions of many particles in the presence of chiral effects. This allows us to explore the influence of spin-orbit coupling on collective effect such as sub- and superradiance.

[1] Nature 541, 473-480, (2017)