Manipulating quantum states with aspheric lenses
arXiv:quant-ph/0412021 · doi:10.1016/j.physleta.2005.06.083
Abstract
We present an experimental demonstration to manipulate the width and position of the down-converted beam waist. Our results can be used to engineer the two-photon orbital angular momentum (OAM) entangled states (such as concentrating OAM entangled states) and generate Hermite-Gaussian (HG) modes entangled states.
Revised edition, to appear in PLA