Observation of biexciton-resonant hyper-parametric scattering in SiO 2/CUCl layered structures

Masaaki Nakayama, Takashi Nishioka, Shuji Wakaiki, Goro Oohata, Kohji Mizoguchi, Dae Gwi Kim, Keiichi Edamatsu

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5 Citations (Scopus)


We have prepared SiO2/CuCl layered structures and investigated the structural and optical properties, focusing on the observation of biexciton-resonant hyper-parametric scattering that is a promising process to generate entangled photons. A crystalline CuCl film, which is the active layer, was grown on an Al2O3 substrate by a vacuum deposition method, and then an amorphous SiO2 film as the passivation layer for hygroscopic CuCl was prepared by an rf-magnetron sputtering method. X-ray diffraction patterns and optical spectra of excitons indicate that the growth of the SiO2-passivation layer does not degrade the crystallinity of the underlying CuCl thin film. It has been demonstrated that the biexciton-resonant hyper-parametric scattering is clearly observable in the SiO2/CuCl layered structure.

Original languageEnglish
Pages (from-to)L234-L236
JournalJapanese Journal of Applied Physics, Part 2: Letters
Issue number8-11
Publication statusPublished - 2007 Mar 9


  • Biexciton
  • Exciton polariton
  • Hyper-parametric scattering
  • SiO /CuCl layered structure
  • Vacuum deposition
  • rf-magnetron sputtering

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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