Experimental demonstration reveals vector beam properties without detection, highlighting implications for quantum information processing.
In this study we experimentally demonstrate the characterization of a vector beam- light with spatially varying polarization- without the neccessity of its detection. To this end, we employ the effect of induced coherence in a nonlinear interferometer. Our findings pave the way for new approaches in quantum information processing such as QKD.
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Vasikonis et al. (2025) studied this question.
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