Picture of athlete cycling

Open Access research with a real impact on health...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

Explore open research content by Physical Activity for Health...

Angular momentum decomposition of entangled photons with an arbitrary pump

Yao, Alison M (2011) Angular momentum decomposition of entangled photons with an arbitrary pump. New Journal of Physics, 13. ISSN 1367-2630

[img]
Preview
Text (Yao-NJP-2011-Angular-momentum-decomposition-of-entangled-photons-with-an-arbitrary-pump)
Yao_NJP_2011_Angular_momentum_decomposition_of_entangled_photons_with_an_arbitrary_pump.pdf - Final Published Version
License: Creative Commons Attribution-NonCommercial-ShareAlike 3.0 logo

Download (679kB) | Preview

Abstract

We calculate the biphoton state generated by spontaneous parametric down-conversion in a thin crystal and under collinear phase matching conditions using a pump consisting of any superposition of Laguerre-Gauss modes. The result has no restrictions on the angular or radial momenta or, in particular, on the width of the pump, signal and idler modes. We demonstrate the strong effect of the ratio of the pump width to the signal/idler widths on the composition of the down-converted entangled fields. The knowledge of this ratio is shown to be essential for calculating the maximally entangled states that can be produced using pumps with a complex spatial profile.