Tunable ultrabright source of entangled photons

P. G. Kwiat, A. G. White

Research output: Contribution to conferencePaperpeer-review


A pump photon in a nonlinear optical crystal may split into two highly correlated daughter photons, satisfying energy and momentum conservation, in turn leading to energy-time and momentum entanglement, respectively. A novel arrangement employing two adjacent, relatively thin, nonlinear crystals, which are operated with type-I phase matching is presented. The energy and momentum entanglements of the photon pairs remain, so that the complete state is actually multiply- or hypertangled. Moreover, simply by varying the pump polarization, it can create states that are nonmaximally entangled.

Original languageEnglish (US)
Number of pages1
StatePublished - 1998
Externally publishedYes
EventProceedings of the 1998 International Quantum Electronics Conference - San Francisco, CA, USA
Duration: May 3 1998May 8 1998


OtherProceedings of the 1998 International Quantum Electronics Conference
CitySan Francisco, CA, USA

ASJC Scopus subject areas

  • General Physics and Astronomy


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