Qudit entanglement is an indispensable resource for quantum information processing since
increasing dimensionality provides a pathway to higher capacity and increased noise …

Not much, in the end. Here we put forward some considerations on how Hong-Ou-Mandel
interferometry provides signatures of frequency entanglement in the two-photon state …

The constantly growing need for fast and secure optical communication systems resulted in
the rapid development of classical and quantum photonic technologies. Continuous …

Exploitation of time-frequency properties of spontaneous parametric down conversion
photon pairs has recently found application in many endeavors. Complete characterization …

We present optical antenna prototypes that can maintain a link between two standard single-
mode fibers with high coupling efficiency. Using standard telecom transmission techniques …

We present an implementation of the time-frequency (TF) quantum key distribution (QKD)
protocol realized mainly with standard telecommunication components at 1550 nm. TF-QKD …

High-dimensional entanglement with larger Hilbert spaces enable an encoding of more bits
per photon and thus promise increased communication capacities over quantum channels …

The interferometer-based, time-frequency encoding quantum key distribution (TF-QKD)
scheme is a promising way to loosen up the restrict resolution requirement for the temporal …

We present precise control of temporal and spectral profiles of pulses generated at the
telecom wavelength in an indium phosphate (InP) photonic integrated circuit enabling …

In this work generation and detection of QKD symbols encoded in time and frequency was
addressed. The QKD symbols were generated as faint laser Gaussian-shaped pulses1 …