Rostock 2019 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 58: Poster: Quantum Optics and Photonics III

Q 58.26: Poster

Donnerstag, 14. März 2019, 16:15–18:15, S Atrium Informatik

Towards pure quantum states of motion of 0.1 kg pendulum suspended mirrors — •Jan Petermann, Alexander Franke, and Roman Schnabel — Institut für Laserphysik und Zentrum für Optische Quantentechnologien, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg

The ERC funded project MassQ aims to test and to confirm quantum theory in the macroscopic world of massive, human-world sized objects. We seek the experimental generation of rather pure coherent states of motion of a single 0.1 kg mirror that is suspended as a pendulum as well as of Einstein-Podolski-Rosen entanglement of two such systems. Using radiation pressure forces inside an interferometer, the centre of mass positions and momenta can be entangled if the uncertainty of the radiation pressure affects the mirror movement. This can be achieved using high intensity laser light. We use a Michelson-Sagnac type interferometer with power recycling to reach a light power of 1 kW on the mirrors.