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Efficient and spectrally bright source of polarization-entangled photons

Friedrich König·Elliott J. Mason·Franco N. C. Wong·Marius A. Albota
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Abstract

We demonstrate an efficient fiber-coupled source of nondegenerate polarization entangled photons at 795 and 1609 nm using bidirectionally pumped parametric down-conversion in bulk periodically poled lithium niobate. The single-mode source has an inferred bandwidth of 50 GHz and a spectral brightness of 300 pairs/s/GHz/mW of pump power that is suitable for narrowband applications such as entanglement transfer from photonic to atomic qubits.

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Friedrich König, Elliott J. Mason, Franco N. C. Wong, Marius A. Albota. 2004-09-24. Efficient and spectrally bright source of polarization-entangled photons. https://doi.org/10.1103/physreva.71.033805

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