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

Daniel Peace, Alexander Zappacosta, Robert Cernansky, Ben Haylock, Andreas Boes, Arnan Mitchell, Mirko Lobino*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

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

Original languageEnglish
Article number035002
JournalJPhys Photonics
Volume4
Issue number3
Early online date25 Jul 2022
DOIs
Publication statusPublished - Jul 2022

Keywords

  • lithium niobate
  • quantum photonics
  • waveguide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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