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Pulsed Sagnac polarization-entangled photon source with a PPKTP crystal at telecom wavelength

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Abstract

We demonstrate pulsed polarization-entangled photons generated from a periodically poled KTiOPO4(PPKTP) crystal in a Sagnac interferometer configuration at telecom wavelength. We achieved fidelities of 0.981 ± 0.0002 for | ψ⟩ and 0.980 ± 0.001 for |ψ+⟩ respectively.

© 2014 Optical Society of America

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