Efficient homodyne measurement of picosecond squeezed pulses with pulse shaping technique

Abstract

We report on the detection of picosecond pulsed squeezed light generated by an optical parametric amplification in a periodically poled $\mathrm{MgO}:{\mathrm{LiNbO}}_3$ waveguide. By using a temporally shaped local oscillator in a balanced homodyne detection, we obverved the squeezing of $-5.0\mathrm{dB}$ below the shot noise level. The squeezing level at the exit of the waveguide was estimated to be $-9.7\pm 0.8\mathrm{dB}$.

© 2011 Optical Society of America

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