Integrated optical source of polarization entangled photons at 1310 nm

Anthony Martin (1) , Valentina Cristofori (1, 2) , Pierre Aboussouan (1) , Harrald Herrmann (3) , Wolfgang Sohler (3) , Daniel Barry Ostrowsky (1) , Olivier Alibart (1) , Sébastien Tanzilli (1)

1 LPMC - Laboratoire de physique de la matière condensée
2 Dipartimento di Elettronica Informatica e Sistemistica
3 Angewandte Physik

We report the realization of a new polarization entangled photon-pair source based on a titanium-indiffused waveguide integrated on periodically poled lithium niobate. The paired photons are emitted at the telecom wavelength of 1310nm within a bandwidth of 0.7nm. The quantum properties of the pairs are measured using a two-photon coalescence experiment showing a visibility of 85%. The evaluated source brightness, on the order of 105 pairs s−1GHz−1mW−1, associated with its compactness and reliability, demonstrates the source's high potential for long-distance quantum communication.

Domaines: Autre [cond-mat.other]

Anthony Martin, Valentina Cristofori, Pierre Aboussouan, Harrald Herrmann, Wolfgang Sohler, et al.. Integrated optical source of polarization entangled photons at 1310 nm. Optics Express, 2009, 17 (2), pp.1033-1041. ⟨10.1364/OE.17.001033⟩. ⟨hal-00441115⟩