Observation of continuous-wave squeezed light at 1550 nm
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🪐 quant-ph
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squeezedcontinuous-wavelightnoisestatesvacuumamplificationaround
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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.
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