Title :
Highly efficient photon-pair source using periodically poled lithium niobate waveguide
Author :
Tanzilli, S. ; de Riedmatten, H. ; Tittel, W. ; Zbinden, H. ; Baldi, P. ; De Micheli, M. ; Ostrowsky, D.B. ; Gisin, N.
Author_Institution :
Lab. de Phys. de la Mater. Condensee, Univ. de Nice-Sophia Antipolis, France
fDate :
1/4/2001 12:00:00 AM
Abstract :
A new kind of correlated photon-pair source based on a waveguide integrated on a periodically poled lithium niobate substrate is reported. Using a pump laser of a few μW at 657 nm, photon-pairs are generated/degenerated at 1314 nm. Detecting ~1500 coincidences per second, a conversion rate of 10-6 pairs per pump photon can be inferred, which is four orders of magnitude higher than that obtained with previous bulk sources. These results are very promising for the realisation of sources for quantum communication and quantum metrology experiments requiring a high signal-to-noise ratio or working with more than one photon-pair at a time
Keywords :
dielectric polarisation; infrared sources; lithium compounds; optical materials; optical phase matching; optical planar waveguides; quantum optics; 1314 nm; 657 nm; LiNbO3; LiNbO3 substrate; bulk sources; coincidence detection; conversion rate; correlated photon-pair source; integrated waveguide; periodically poled waveguide; photon-pair; photon-pair source; photon-pairs degeneration; photon-pairs generation; pump laser; pump photon; quantum communication; quantum metrology experiments; signal-to-noise ratio;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20010009
