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This research demonstrates polarization entanglement in photon pairs using four-wave mixing in few-mode fiber, suggesting advances in quantum communication.
Polarization entangled signal and idler photons in the higher-order LP11a and LP11b modes, respectively, are generated via inter-spatial-mode spontaneous four-wave mixing in a 17-m-long mode maintaining few-mode fiber with a panda type elliptical core.
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Zhu et al. (2025) studied this question.
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