This paper provides an extensive survey of nonlinear parametric upconversion infrared (IR)
imaging, from its origin to date. Upconversion imaging is a successful innovative technique …

Optical frequency up-conversion is a technique, based on sum frequency generation in a
non-linear optical medium, in which signal light from one frequency (wavelength) is …

Transducing non-classical states of light from one wavelength to another is required for
integrating disparate quantum systems that take advantage of telecommunications-band …

Non-line-of-sight (NLOS) imaging enables monitoring around corners and is promising for
diverse applications. The resolution of transient NLOS imaging is limited to a centimeter …

Energy-time entangled photons are critical in many quantum optical phenomena and have
emerged as important elements in quantum information protocols. Entanglement in this …

Frequency conversion (FC) and type-II parametric down-conversion (PDC) processes serve
as basic building blocks for the implementation of quantum optical experiments: type-II PDC …

We demonstrate Gaussian-shaped phase matching of a periodically-poled potassium titanyl
phosphate (PPKTP) crystal by imposing a custom duty-cycle pattern on its grating structure …

We demonstrate a technique for characterizing two-photon quantum states based on joint
temporal cor<? format?> relation measurements using time-resolved single-photon …

We demonstrate the first, to the best of our knowledge, type-0 broadband sum-frequency
generation (SFG) based on single-crystal periodically poled LiNbO_3 (PPLN) thin film. The …

Future quantum information networks operated on telecom channels require qubit transfer
between different wavelengths while preserving quantum coherence and entanglement …