Single-photon frequency up-conversion with multimode pumping
Haifeng Pan, E Wu, Huafang Dong, Heping Zeng · Physical Review A · 2008
Efficient single-photon frequency up-conversion was demonstrated under strong multi-longitudinal-mode pump, where the incident single-photon state was converted to a superposition state after the nonlinear interaction with the multimode pump field. Through frequency summing with a sufficiently strong multimode pump at $1.06\text{ }\ensuremath{\mu}\text{m}$, a single-photon signal at $1.55\text{ }\ensuremath{\mu}\text{m}$ was up-converted to the visible replicas near $0.63\text{ }\ensuremath{\mu}\text{m}$ with a nearly unity efficiency. This may support tunable multimode photonic quantum-information interface and precise wavelength control on single-photon manipulation.