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quant-ph2026
From triangles to prisms: towards a geometric extension of concurrence fill for three-qubit mixed states
Divyanshu K. Verma, Girish Kulkarni
The quantification of multipartite entanglement remains a long-standing open challenge in quantum information theory with major implications for quantum foundations and quantum tec…
quant-ph2026
Theory of temporal three-photon interference
Nilakshi Senapati, Girish Kulkarni, Anand K. Jha
The recent demonstrations of cascaded PDC (CPDC) and the hopeful prospects of realizing third-order PDC (TOPDC) for the generation of three-photon entangled states are paving the w…
quant-ph2026
Full Schmidt characterization of spatiotemporally entangled states produced from spontaneous parametric down-conversion
Rakesh Pradhan, Girish Kulkarni
The full Schmidt decomposition of spatiotemporally entangled states generated from spontaneous parametric down-conversion (SPDC) has not been carried out until now due to the immen…