Two-photon interference between disparate sources for quantum networking

A. R. McMillan*, L. Labonte, A. S. Clark, B. Bell, O. Alibart, A. Martin, W. J. Wadsworth, S. Tanzilli, J. G. Rarity

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

13 Citations (Scopus)


Quantum networks involve entanglement sharing between multiple users. Ideally, any two users would be able to connect regardless of the type of photon source they employ, provided they fulfill the requirements for two-photon interference. From a theoretical perspective, photons coming from different origins can interfere with a perfect visibility, provided they are made indistinguishable in all degrees of freedom. Previous experimental demonstrations of such a scenario have been limited to photon wavelengths below 900 nm, unsuitable for long distance communication, and suffered from low interference visibility. We report two-photon interference using two disparate heralded single photon sources, which involve different nonlinear effects, operating in the telecom wavelength range. The measured visibility of the two-photon interference is 80 +/- 4%, which paves the way to hybrid universal quantum networks.

Original languageEnglish
Article number2032
Number of pages5
JournalScientific Reports
Publication statusPublished - 20 Jun 2013

Structured keywords

  • QETLabs
  • Photonics and Quantum




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