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Squeezed light at sideband frequencies below 100 kHz from a single OPA

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

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Vahlbruch,  Henning
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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Fulltext (public)

0402064.pdf
(Preprint), 137KB

Optics-Communications_240_1-3.pdf
(Publisher version), 331KB

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Citation

Schnabel, R., Vahlbruch, H., Franzen, A., Chelkowski, S., Grosse, N. B., Bachor, H.-A., et al. (2004). Squeezed light at sideband frequencies below 100 kHz from a single OPA. Optics Communications, 240(1-3), 185-190. doi:10.1016/j.optcom.2004.06.030.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-4FD5-6
Abstract
Quantum noise of the electromagnetic field is one of the limiting noise sources in interferometric gravitational wave detectors. Shifting the spectrum of squeezed vacuum states downwards into the acoustic band of gravitational wave detectors is therefore of challenging demand to quantum optics experiments. We demonstrate a system that produces nonclassical continuous variable states of light that are squeezed at sideband frequencies below 100 kHz. A single optical parametric amplifier (OPA) is used in an optical noise cancellation scheme providing squeezed vacuum states with coherent bright phase modulation sidebands at higher frequencies. The system has been stably locked for half an hour limited by thermal stability of our laboratory.