Picosecond pulsed squeezing in thin-film lithium niobate strip-loaded waveguides at telecommunication wavelengths

Abstract Achieving a high level of pulsed squeezing, in platform which offers integration and stability, is key requirement for continuous-variable quantum information processing. Typically highly squeezed states are achieved with narrow band optical cavities bulk crystals, limiting scalability. Using single-pass parametric down conversion an integrated device, we demonstrate quadrature squeezing picosecond pulses thin-film lithium niobate strip-loaded waveguide. For on-chip peak powers less than 0.3 W, measure up to ?0.33 ± 0.07 dB inferred value ?1.7 0.4 dB. This work highlights the potential waveguide broadband applications development photonic technologies.