Phase-compensated ultra-bright source of entangled photons

J. B. Altepeter, E. R. Jeffrey, P. G. Kwiat

Research output: Contribution to journalArticlepeer-review


While the most direct method to increase the brightness of a type-I entanglement source is to increase the collected solid angle of the down-conversion, this leads to effective decoherence caused by an angle-dependent phase shift. Using specially designed compensation crystals, we have reversed this effect and created the brightest source of entangled photons to date, over two million measured pairs per second, recorded while measuring the largest reported violation of Bell's inequality (1239 σ).

Original languageEnglish (US)
Pages (from-to)8951-8959
Number of pages9
JournalOptics Express
Issue number22
StatePublished - Oct 31 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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