Hannover 2010 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 42: Precision Measurements and Metrology V

Q 42.7: Vortrag

Donnerstag, 11. März 2010, 12:00–12:15, A 310

Demonstration of a squeezed zero-area Sagnac interferometer topology for future gravitational wave detectors — •Tobias Eberle, Sebastian Steinlechner, Jöran Bauchrowitz, Vitus Händchen, Karsten Danzmann, and Roman Schnabel — Institut für Gravitationsphysik, Leibniz Universität Hannover und Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut) Callinstrasse 38 D-30167 Hannover

The design study for the Einstein Telescope (ET), the future European laser-interferometric gravitational wave detector, is on going. An option for the interferometer topology is a zero-area Sagnac. The Sagnac interferometer is a speed-meter and therefore a quantum non-demolition device that in principle can beat the standard quantum limit. The sensitivity of gravitational wave detectors can be further enhanced by the injection of squeezed light. In this talk we present the experimental demonstration of a table-top zero-area Sagnac interferometer at 1064nm whose sensitivity was increased with squeezed light.