Entangled photon pairs are a critical resource in quantum communication protocols ranging
from quantum key distribution to teleportation. The current workhorse technique for …

The temperature dependence of the refractive indices of potassium titanyl phosphate (KTP)
is shown to enable quasi-phasematched type II spontaneous parametric downconversion …

Quantum photonic devices operating in the single photon regime require the detection and
characterization of quantum states of light. Chip-scale, waveguide-based devices are a key …

Entangled photon sources (EPSs) are pivotal in advancing quantum communication,
computing and sensing. The demand for deploying efficient, robust EPSs in the field …

The transverse momentum correlation of photon pairs generated by noncollinear
spontaneous parametric down-conversion with type-I phase matching is transformed into …

High-dimensional entangled states are of crucial importance, as they provide higher
channels for quantum information. Angular position, as a continuous variable, provides an …

In this work we study the transverse spatial correlation of the pair of photons generated via
the process of spontaneous parametric frequency down-conversion, in periodically poled …

Different degrees of freedom of single photons have been entangled and are used as a
resource for various quantum technology applications. We present a simple scheme to …

We investigate quantum entanglement of three photons performing discrete-time quantum
walk (DTQW) on the nearest-neighbor sites of a square lattice. Such a DTQW setup has …

In this report, decoherence sources for entangled photons created by spontaneous
parametricdown-conversion phenomenon are studied. The phase and spatial …