Integrated optical source of polarization entangled photons at 1310 nm

Details Integrated optical source of polarization entangled photons at 1310 nm Integrated optical source of polarization entangled photons at 1310 nm

2009-01-19

arxiv.org/abs/0901.2815v2

Opt. Exp. 17, pp. 1033-1041 (2009)

Physics

Quantum Physics

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Scientific paper

10.1364/OE.17.001033

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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