SAMOP 2023 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 59: Poster IV
Q 59.55: Poster
Thursday, March 9, 2023, 16:30–19:00, Empore Lichthof
Ultrastrong coupling in levitated optomechanics — •Iurie Coroli1, Kahan Dare1,2, Jannek Hansen1, Aisling Johnson1, Markus Aspelmeyer1,2, and Uros Delic1 — 1University of Vienna, Faculty of Physics, Vienna Center for Quantum Science and Technology (VCQ), Boltzmanngasse 5, A-1090 Vienna, Austria — 2Institute for Quantum Optics and Quantum Information (IQOQI) Vienna, Austrian Academy of Sciences, A-1090 Vienna, Austria
Levitated nanoparticles have long been heralded as an excellent platform for quantum sensing. Recent proposals have sought to utilize instability due to ultra-strong coupling via coherent scattering but this regime has been out of reach to experimental systems. We report the first levitated optomechanical system to operate in the ultrastrong coupling regime, reaching a maximum coupling of gx/Ωx = 0.5 operating in the resolved sideband regime. We demonstrate future extensions to this system which can dramatically improve the optomechanical cooperativity and further boost the coupling rates, which opens up quantum experiments in the ultrastrong coupling or even deep strong coupling regime to simple table-top systems.