TY - JOUR

T1 - Orbital angular momentum correlations of entangled paired photons

AU - Osorio, Clara I.

AU - Molina-Terriza, G.

AU - Torres, Juan P.

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=70449382457&partnerID=8YFLogxK

U2 - 10.1088/1464-4258/11/9/094013

DO - 10.1088/1464-4258/11/9/094013

M3 - Article

VL - 11

SP - 1

EP - 7

JO - Journal of Optics A: Pure and Applied Optics

JF - Journal of Optics A: Pure and Applied Optics

SN - 1464-4258

IS - 9

M1 - 094013

ER -