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arXiv · 1109.2519

Quantum entanglement distribution with 810 nm photons through active telecommunication fibers

Catherine Holloway·Evan Meyer-Scott·Chris Erven·Thomas Jennewein
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Abstract

We demonstrate the distribution of polarization-entangled photons for the purpose of quantum key distribution (QKD) along active telecom fibers. Entangled photon pairs of 810 nm wavelength generated by a Sagnac interferometer source were coupled into standard telecom single mode fibers. The fibers were either dark or carrying a standardized 1550 nm ethernet signals (1000BASE-ZX) with a nominal speed of 1 GBps from regular media converter devices, without any requirements on the optical power or spectrum transmitted. Our system demonstrates a QKD network covering 6 km in distance with a central service provider for classical and quantum data.

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Catherine Holloway, Evan Meyer-Scott, Chris Erven, Thomas Jennewein. 2011-09-12. Quantum entanglement distribution with 810 nm photons through active telecommunication fibers. https://doi.org/10.1364/oe.19.020597

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