Authors
Philip G Evans, Ryan S Bennink, Warren P Grice, Travis S Humble, Jason Schaake
Publication date
2010/12/17
Journal
Physical Review Letters
Volume
105
Issue
25
Pages
253601
Publisher
American Physical Society
Description
We present results of a bright polarization-entangled photon source operating at 1552 nm via type-II collinear degenerate spontaneous parametric down-conversion in a periodically poled potassium titanyl phosphate crystal. We report a conservative inferred pair generation rate of into collection modes. Minimization of spectral and spatial entanglement was achieved by group velocity matching the pump, signal, and idler modes and through properly focusing the pump beam. By utilizing a pair of calcite beam displacers, we are able to overlap photons from adjacent down-conversion processes to obtain polarization-entanglement visibility of with accidentals subtracted.
Total citations
200920102011201220132014201520162017201820192020202120222023202419108991841212131710105