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quant-ph2026
Algebraic Characterization of Biphoton Spatial-Mode Entanglement in Higher-Order Laguerre--Gaussian-Pumped SPDC
Takumi Jinushi, Hirokazu Kobayashi
High-dimensional spatial entanglement generated via spontaneous parametric down-conversion (SPDC) provides a powerful resource for quantum information processing, yet its mode stru…
quant-ph2026
Quantum Gouy phase singularities in a propagating biphoton state
Takumi Jinushi, Hirokazu Kobayashi
Phase singularities are topological defects around which the phase winds by an integer multiple of . In entangled multiphoton states, they can emerge nonlocally in the joint wa…