2009/02/04 by Moritz Mehmet, Sebastian Steinlechner, Tobias Eberle +4 · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1364/ol.34.001060
4 pages, 3 figures
arxiv created 2009/02/04 · arxiv updated 2015/05/12
We report on the generation of continuous-wave squeezed vacuum states of light at the telecommunication wavelength of 1550 nm. The squeezed vacuum states were produced by type I optical parametric amplification (OPA) in a standing-wave cavity built around a periodically poled potassium titanyl phosphate (PPKTP) crystal. A non-classical noise reduction of 5.3 dB below the shot noise was observed by means of balanced homodyne detection.