Bonn 2025 – wissenschaftliches Programm
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QI: Fachverband Quanteninformation
QI 23: Quantum Technologies (Color Centers and Ion Traps) I (joint session Q/QI)
QI 23.1: Hauptvortrag
Mittwoch, 12. März 2025, 14:30–15:00, HS Botanik
Integration of fiber Fabry-Perot cavities for sensing applications and cavity optomechanics — •Hannes Pfeifer1, Lukas Tenbrake2, Carlos Saavedra3, Florian Giefer2, Jana Blechmann2, Johanna Stein2, Daniel Stachanow2, Dieter Meschede2, Karol Krzempek4, Randall Goldsmith3, Witlef Wieczorek1, Stefan Linden2, and Sebastian Hofferberth2 — 1Chalmers University of Technology, Gothenburg, Sweden — 2University of Bonn, Germany — 3University of Wisconsin-Madison, USA — 4Wroclaw University of Science and Technology, Poland
Since their first realization during the 2000s, fiber-based Fabry-Perot cavities (FFPCs) have found their way into an increasing manifold of optical experiments. Driven by the accessibility of their optical mode volume, quantum systems down to single atoms and up to macroscopic mechanical oscillators have been interfaced through FFPCs. Besides their unique features: the strong miniaturization, direct fiber coupling, and large optical access; key challenges such as their experiment integration, coupling efficiency, susceptibility to mechanical vibration, and thermal load remain. In my talk, I will report on the developments from the Bonn Fiber Lab addressing these issues, with a focus on the integration of sensing applications and cavity optomechanics experiments within FFPCs. I will touch upon the realization of highly sensitive readout schemes for gas spectroscopy and single molecule detection, and discuss the structural integration of mechanical resonators using direct laser writing. Finally, I will discuss the prospects of using FFPCs to interface and manipulate mechanical multimode systems.
Keywords: fiber Faber-Perot cavity; optomechanics; sensing; spectroscopy; direct laser writing