Observation of a Nonlocal Optical Vortex
Abstract
We report the observation of an optical vortex in the correlations of photons produced from spontaneous parametric down-conversion. The singularity appears in a nonlocal coordinate plane consisting of 1 degree of freedom of each photon.
- Publication:
-
Physical Review Letters
- Pub Date:
- July 2009
- DOI:
- Bibcode:
- 2009PhRvL.103c3602G
- Keywords:
-
- 42.50.Xa;
- 03.65.Ud;
- 42.50.Dv;
- 42.65.Lm;
- Optical tests of quantum theory;
- Entanglement and quantum nonlocality;
- Nonclassical states of the electromagnetic field including entangled photon states;
- quantum state engineering and measurements;
- Parametric down conversion and production of entangled photons