Abstract

We report on the generation of cw squeezed vacuum states of light at the telecommunication wavelength of 1550nm. The squeezed vacuum states were produced by type I optical parametric amplification in a standing-wave cavity built around a periodically poled potassium titanyl phosphate crystal. A nonclassical noise reduction of 5.3dB below the shot noise was observed by means of balanced homodyne detection.

© 2009 Optical Society of America

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