Towards nondegenerate polarization entanglement from a waveguide down-conversion source

Kristina A. Meier, Fumihiro Kaneda, Paul G. Kwiat

Research output: Chapter in Book/Report/Conference proceedingConference contribution


As optical quantum information processing protocols and experiments become increasingly more complex, integrated optics provide a small and robust alternative to traditional bulk optics. Specifically, waveguide technology allows for the creation of bright single-photon sources based on the fact that photon pairs can be created at any location along the waveguide. For our goals, we are working on the characterization of a highly nondegenerate Spontaneous Parametric Down-Conversion (SPDC) waveguide source on a periodically poled KTP (PPKTP) crystal. Our current waveguide source uses type-II phase-matching to create collinear signal and idler photons at 1550 nm and 810 nm, respectively, with the promise of generating simultaneous time-bin and polarization entanglement in future iterations. Our intended source application is for use in quantum key distribution and superdense teleportation protocols between a space platform and collection telescopes on Earth.

Original languageEnglish (US)
Title of host publicationAdvanced Photon Counting Techniques XII
EditorsJoe C. Campbell, Mark A. Itzler
ISBN (Electronic)9781510618299
StatePublished - 2018
EventAdvanced Photon Counting Techniques XII 2018 - Orlando, United States
Duration: Apr 18 2018Apr 19 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherAdvanced Photon Counting Techniques XII 2018
Country/TerritoryUnited States


  • Integrated Photonics
  • Nonlinear Crystals
  • Photon Counting
  • Polarization Entanglement
  • SPDC
  • Single-Photon Source
  • Waveguide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Towards nondegenerate polarization entanglement from a waveguide down-conversion source'. Together they form a unique fingerprint.

Cite this