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arXiv · 0707.0166

Demonstration of a squeezed light enhanced power- and signal-recycled Michelson interferometer

Henning Vahlbruch·Simon Chelkowski·Boris Hage·Alexander Franzen·Karsten Danzmann·Roman Schnabel
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Abstract

We report on the experimental combination of three advanced interferometer techniques for gravitational wave detection, namely power-recycling, detuned signal-recycling and squeezed field injection. For the first time we experimentally prove the compatibility of especially the latter two. To achieve a broadband non-classical sensitivity improvement we applied a filter cavity for compensation of quadrature rotation. Signal to noise ratio was improved by up to 2.8 dB beyond the coherent state's shot noise. The complete set-up was stably locked for arbitrary times and characterized by injected single-sideband modulation fields.

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Henning Vahlbruch, Simon Chelkowski, Boris Hage, Alexander Franzen, Karsten Danzmann, Roman Schnabel. 2007-07-02. Demonstration of a squeezed light enhanced power- and signal-recycled Michelson interferometer. https://doi.org/10.1103/physrevlett.95.211102

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