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arXiv · 0901.2815

Integrated optical source of polarization entangled photons at 1310 nm

A. Martin·V. Cristofori·P. Aboussouan·H. Herrmann·W. Sohler·D. B. Ostrowsky·O. Alibart·S. Tanzilli
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Abstract

We report the realization of a new polarization entangled photon-pair source based on a titanium-indiffused waveguide integrated on periodically poled lithium niobate pumped by a CW laser at $655 nm$. The paired photons are emitted at the telecom wavelength of $1310 nm$ within a bandwidth of $0.7 nm$. 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 $10^5$ pairs $s^{-1} GHz^{-1} mW^{-1}$, associated with its compactness and reliability, demonstrates the source's high potential for long-distance quantum communication.

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A. Martin, V. Cristofori, P. Aboussouan, H. Herrmann, W. Sohler, D. B. Ostrowsky, O. Alibart, S. Tanzilli. 2009-01-19. Integrated optical source of polarization entangled photons at 1310 nm. https://doi.org/10.1364/oe.17.001033

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