Experimental observation of OAM non-conservation in Type-I SPDC attributed to spatial walk-off, demonstrated with a sensitive two-photon OAM detector and approximation-free theory.
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Fractional OAM charge ℓ=1.5 induces an optimal 67.5° GKP lattice rotation that reduces error rate 23.9× with <0.2% loss in Fisher information and yields 41% higher metrological capacity.
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Observation of OAM non-conservation in entangled photon generation
Experimental observation of OAM non-conservation in Type-I SPDC attributed to spatial walk-off, demonstrated with a sensitive two-photon OAM detector and approximation-free theory.
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OAM-Induced Lattice Rotation Reveals a Fractional Optimum in Fault-Tolerant GKP Quantum Sensing
Fractional OAM charge ℓ=1.5 induces an optimal 67.5° GKP lattice rotation that reduces error rate 23.9× with <0.2% loss in Fisher information and yields 41% higher metrological capacity.