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Achieving high level of pulsed squeezing, in a platform which offersintegration and stability, is a key requirement for continuous-variable quantuminformation processing. Typically highly squeezed states are achieved withnarrow band optical cavities and bulk crystals, limiting scalability. Usingsingle-pass parametric down conversion in an integrated optical device, wedemonstrate quadrature squeezing of picosecond pulses in a thin-film lithiumniobate strip-loaded waveguide. For on-chip peak powers of less than 0.3 W, wemeasure up to -0.33$\pm$0.07 dB of squeezing with an inferred on-chip value of-1.7$\pm$0.4 dB. This work highlights the potential of the strip-loadedwaveguide platform for broadband squeezing applications and the development ofphotonic quantum technologies.

Picosecond Pulsed Squeezing in Thin-Film Lithium Niobate Strip-Loaded Waveguides at Telecommunication Wavelengths