Bonn 2025 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 48: Poster – Quantum Optics, Technologies, and Optomechanics

Q 48.23: Poster

Mittwoch, 12. März 2025, 17:00–19:00, Tent

An economic cryostat for quantum optical experiments — •Max Masuhr, Hazem Hajjar, Bo Deng, Babak Behjati, Kathrin Schumacher, and Daqing Wang — Institut für Angewandte Physik, Universität Bonn, Bonn, Germany

Many quantum optical experiments are susceptible to vibrations caused by the helium compression cycle in the cryostat, necessitating delicate vibration isolation designs. Here, we present the mechanical and electrical construction of a low-cost custom cryostat built around a commercial cold head that mitigates vibrations while allowing full access for quantum optical experiments. The cryostat houses a sample space, which includes a high-numerical-aperture lens for imaging single organic dye molecules. Utilizing the tandem displacement of the sample and the objective, vibrational effects on measured optical images are reduced. The design of this cryostat could be interesting for an extended range of quantum optical experiments on solid-state samples.

Keywords: Optical cryostats; Single emitter spectroscopy