Abstract

We show that transverse engineering of quasi-phase-matched geometries can be used to tailor the spatial mode function that describes the quantum state of photon pairs generated in spontaneous parametric downconversion. We study several geometries and reveal how properly engineered gratings affect, in particular, the spatial correlations embedded in two-photon entangled states.

© 2004 Optical Society of America

Engineering the frequency correlations of entangled two-photon states by achromatic phase matching

Juan P. Torres, Ferran Macià, Silva Carrasco, and Lluis Torner
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Orbital angular momentum of entangled counterpropagating photons

Juan P. Torres, Clara I. Osorio, and Lluis Torner
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Enhancing the axial resolution of quantum optical coherence tomography by chirped quasi-phase matching

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Engineered quasi-phase matching for multiple parametric generation

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