Abstract
We demonstrate a compact, alignment-free, turn-key, all-fiber broadband polarization-entangled photon source pumped by a fiber-pigtailed laser diode. Robust and stable operation yields a concurrence of 0.966 ± 0.015 and a fidelity to |Ψ+〉 of 98.1 ± 0.8%.
© 2018 The Author(s)
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