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An integrated source of high purity single photon pairs with narrow bandwidths

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Abstract

We implemented a compact integrated non-degenerate source which comprises a periodically poled waveguide with highly reflective dielectric mirror coatings to obtain narrowband photon pairs based on type II parametric down-conversion. Our engineered source exploits clustering in the dispersive cavity to restrict the conversion to a predominantly single mode operation with a narrowband linewidth and high spectral purity. The miniaturized monolithic design makes our source a versatile device for various applications in quantum communication and information processing.

© 2014 Optical Society of America

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