Orbital angular momentum correlations of entangled paired photons

Clara I. Osorio, G. Molina-Terriza, Juan P. Torres

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


The generation of paired photons entangled in the spatial degree of freedom, i.e., in orbital angular momentum, offers a convenient physical resource to investigate the nature of entanglement in a multidimensional Hilbert space with controllable dimensionality. The two main physical processes that generate pairs of photons which show correlations in orbital angular momentum are (a) spontaneous parametric down-conversion (SPDC), and (b) Raman transitions induced in atomic ensembles. One question naturally arises: what kinds of correlations exist between the orbital angular momentum of the generated photons? The answer might be different if we consider the whole quantum state of the generated photons, i.e., all possible directions where the pairs of photons can be emitted, or if we consider only a small section of the full set of directions.

Original languageEnglish
Article number094013
Pages (from-to)1-7
Number of pages7
JournalJournal of Optics A: Pure and Applied Optics
Issue number9
Publication statusPublished - 2009
Externally publishedYes


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