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Q: Fachverband Quantenoptik und Photonik
Q 27: Precision Measurements and Metrology IV (joint session Q/A)
Q 27.7: Talk
Wednesday, March 16, 2022, 12:15–12:30, Q-H11
Pertubation of trapping standards — •Martin Kernbach1,2, Paul Oskar Sund1, and Andreas W. Schell1,2 — 1Leibniz Universtity Hannover — 2Physikalisch-Technische Bundesanstalt Braunschweig
Levitation platforms like quadrupole traps or optical tweezers are established tools for various experiments. Trapped particles are strongly isolated from their environment. This makes for example single ions accessible as individual quantum systems. Also particles up to the micrometer regime are trappable, which gives access to their even more complex properties, like internal degrees of freedom, chemical composition, or chemical reactions under well defined artificial environmental conditions.
As a first step toward a nanoparticle levitation platform we have set up a quadrupole trap with electro spray injection and in combination with a confocal microscope. The parameter range allows for trapping of nanometer to micrometer sized particles. The optical fingerprint of these particles are taken by Raman spectroscopy. As a second step we simulate trapping with respect to the driving field, atmospheric conditions or cooling. The experimental setup is designed to enable driving potentials of arbitrary waveform for particles on the micrometer scale. With these prerequisites experimental testing of promising exotic drivings can be realized. Effects on trapping speed and equilibrium temperature are expected to be confirmed.