Effects of filtering on the purity of heralded single photons from parametric sources

Daniel R. Blay, M. J. Steel, L. G. Helt

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Optical quantum protocols are reliant on the production of highly pure single photons. However, most parametric heralded single-photon sources possess spectral correlations, limiting the purity of the produced photon. The most common method for restoring the purity is with narrowband spectral filtering, which comes at the cost of reducing the rate of heralding detection. Here, we characterize this trade-off analytically for a large class of parametric sources. It is possible to achieve up to 20% heralding success probabilities with 90% heralded photon purities.

Original languageEnglish
Article number053842
Pages (from-to)1-8
Number of pages8
JournalPhysical Review A
Volume96
Issue number5
DOIs
Publication statusPublished - 20 Nov 2017

Fingerprint Dive into the research topics of 'Effects of filtering on the purity of heralded single photons from parametric sources'. Together they form a unique fingerprint.

  • Cite this