1.
Opt Express
; 22(19): 23743-8, 2014 Sep 22.
Artigo
em Inglês
| MEDLINE
| ID: mdl-25321841
RESUMO
We present a method for the generation of correlated photon pairs in desired orbital-angular-momentum states using a non-linear silica ring fiber and spontaneous parametric down-conversion. Photon-pair emission under quasi-phase-matching conditions with quantum conversion efficiency 6 × 10(-11) is found in a 1-m long fiber with a thermally induced χ(2) nonlinearity in a ring-shaped core.