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Highly indistinguishable heralded single-photon sources using parametric down conversion.

Authors
  • Tanida, Masato1
  • Okamoto, Ryo
  • Takeuchi, Shigeki
  • 1 The Institute of Scientific and Industrial Research, Osaka University, Ibaraki 567-0047, Japan. , (Japan)
Type
Published Article
Journal
Optics Express
Publisher
The Optical Society
Publication Date
Jul 02, 2012
Volume
20
Issue
14
Pages
15275–15285
Identifiers
DOI: 10.1364/OE.20.015275
PMID: 22772225
Source
Medline
License
Unknown

Abstract

We theoretically and experimentally investigate the conditions necessary to realize highly indistinguishable single-photon sources using parametric down conversion. The visibilities of Hong-Ou-Mandel (HOM) interference between photons in different fluorescence pairs were measured and a visibility of 95.8 ± 2% was observed using a 0.7-mm-long beta barium borate crystal and 2-nm bandpass filters, after compensating for the reflectivity of the beam splitter. A theoretical model of HOM interference visibilities is proposed that considers non-uniform down conversion process inside the nonlinear crystal. It well explains the experimental results.

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