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Optical and Quantum Electronics

Disentanglement induced by combined effects of polarization mode dispersion and polarization-dependent loss in optical fibers

Yiwen Liu

Published Jun 10, 2023• 3 citations
Publisher
DOI
10.1007/s11082-023-05025-y

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We characterize theoretically and experimentally the degradation of polarization entanglement in a fiber-optic entanglement distribution system where one of the optical fibers is exposed to the effects of polarization mode dispersion (PMD). We show gradual reduction of entanglement with increasing PMD and find that the highest PMD tolerance is achieved when the bandwidth of the pump used to generate the entangled photons in a χ((3)) process is approximately half the bandwidth of the quantum channels.