An experimental optical physicist who coauthored a 1986 demonstration of optical squeezed vacuum. Degenerate spontaneous parametric down-conversion inside a cavity produced reduced fluctuations of an optical quadrature, measured with balanced homodyne detection. The result made a noise level below the vacuum reference a directly measured optical property.[ref]
Generation of Squeezed States by Parametric Down Conversion by Ling-An Wu and others. Abstract: cavity down-conversion and below-vacuum homodyne noise
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