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Q: Fachverband Quantenoptik und Photonik
Q 39: Posters: Quantum Optics and Photonics III
Q 39.34: Poster
Mittwoch, 11. März 2020, 16:30–18:30, Empore Lichthof
Coupling of a cold nanomechanical oscillator to ultracold atoms in a 3D optical lattice — •Felix Klein1, Jakob Butlewski1, Tobias Wagner1, Philipp Rohse1, Cody Friesen2, Roland Wiesendanger2, Klaus Sengstock1, Alexander Schwarz2, and Christoph Becker1 — 1Center for Optical Quantum Technologies, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany — 2Institute for Nanostructure and Solid State Physics, University of Hamburg, Jungiusstraße 11, 20355 Hamburg, Germany
In recent years hybrid quantum systems became a highly interesting topic as they allow to combine the individual benefits of different quantum systems to overcome the limitations in their respective parts. Therefore, these systems are, among others, promising for future applications in quantum information science. Here we report about coupling a cryogenically cooled nanomechanical trampoline oscillator inside a Fiber Fabry-Pérot Cavity (FFPC) to ultracold atoms in a 3D optical lattice. We characterize the coupling to motional degrees of freedom by loading the atoms into a near-detuned, optical 1D lattice which is formed by back reflection from the oscillator inside the FFPC. Scattering losses due to resonant light are partially compensated by a very deep far-detuned 2D confinement lattice. We observed signatures of resonant coupling in the form of heating the at ωlatt=ωm. Coupling the trampoline oscillator to the atoms at varying mode temperature we find clear indications for temperature dependent heating rates.