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Q: Fachverband Quantenoptik und Photonik
Q 67: Optomechanics III
Q 67.8: Vortrag
Freitag, 10. März 2023, 12:45–13:00, F442
Strong Coulomb interaction between highly charged optically trapped sub-micron particles in vacuum — •Ayub Khodaee1, Anton Zasedatelev1, and Markus Aspelmeyer1,2 — 1Faculty of Physics, Boltzmanngasse 5, 1090 Wien, Vienna, Austria — 2IQOQI - Vienna, Boltzmanngasse 3, 1090 Wien, Vienna, Austria
Optically levitated nano- and micro-particles, in which the motion of a mechanical degree of freedom is controlled via light-induced forces, comprise a new class of ultimately isolated macroscopic mechanical oscillators with high-quality factors exceeding 108 [Gonzalez-Ballestero, C., et al., Science 374.6564 (2021): eabg3027]. One of the central goals of levitated optomechanics nowadays is to prepare a particle wave packet in a sufficiently pure quantum state and generate entanglement between macroscopic mechanical oscillators [Gonzalez-Ballestero, C., et al., Science 374.6564 (2021): eabg3027]. Strong electrostatic interaction between highly charged levitated particles is one the most promising strategies to generate stationary entangled states. The preparation of a pair of highly charged optically levitated particles in the ultra-high vacuum (UHV) is an experimental challenge on the way to implement ground state cooling and quantum entanglement between optically trapped particles. Here we address this problem and present our experimental approach to load, charge, and control sub-micron particles in tunable optical traps in UHV.