The GEO 600 squeezed light source

Vahlbruch, Henning; Khalaidovski, Alexander; Lastzka, Nico; Gräf, Christian; Danzmann, Karsten; Schnabel, Roman

doi:10.1088/0264-9381/27/8/084027

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学術論文

The GEO 600 squeezed light source

MPS-Authors

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Vahlbruch, Henning
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Khalaidovski, Alexander
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Lastzka, Nico
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Gräf, Christian
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Danzmann, Karsten
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Schnabel, Roman
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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CQG_27_8_084027.pdf
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引用

Vahlbruch, H., Khalaidovski, A., Lastzka, N., Gräf, C., Danzmann, K., & Schnabel, R. (2010). The GEO 600 squeezed light source. Classical and Quantum Gravity, 27:. doi:10.1088/0264-9381/27/8/084027.

引用: https://hdl.handle.net/11858/00-001M-0000-0012-9D57-6

要旨

The next upgrade of the GEO 600 gravitational-wave detector is scheduled for 2010 and will, in particular, involve the implementation of squeezed light. The required non-classical light source is assembled on a 1.5 m2 breadboard and includes a full coherent control system and a diagnostic balanced homodyne detector. Here, we present the first experimental characterization of this setup as well as a detailed description of its optical layout. A squeezed quantum noise of up to 9 dB below the shot-noise level was observed in the detection band between 10 Hz and 10 kHz. We also present an analysis of the optical loss in our experiment and provide an estimation of the possible non-classical sensitivity improvement of the future squeezed light enhanced GEO 600 detector.