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quant-ph2026
High-gain effects in broadband continuous-wave parametric down conversion sources and measurements with undetected photons
Martin Houde, Franz Roeder, Christine Silberhorn +2
We study theoretically how high-gain effects affect the measurement outcome of visible signal spectra in undetected photon measurement schemes. We consider two interferometric conf…
quant-ph2026
Quantum Fisher information analysis for absorption measurements with undetected photons
Martin Houde, Franz Roeder, Christine Silberhorn +2
We theoretically compare the quantum Fisher information (QFI) for three configurations of absorption spectroscopy with undetected idler photons: an SU(1,1) interferometer with inte…
quant-ph2025
Parametric processes in nonlinear structures with reflections: an asymptotic-field approach
Tadeu Tassis, Salvador Poveda-Hospital, Nicolás Quesada +1
The generation of engineered quantum states of light via nonlinear processes is fundamental for quantum technologies based on photons. Although embedding nonlinear materials within…