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

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

2004-02-09

arxiv.org/abs/quant-ph/0402064v1

Optics Communications 240 (2004) 185-190

Physics

Quantum Physics

3 pages, 3 figures

Scientific paper

10.1016/j.optcom.2004.06.030

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.

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