The time-frequency degree of freedom is a powerful resource for implementing high-
dimensional quantum information processing. In particular, field-orthogonal pulsed temporal …

Quantum key distribution has reached the level of maturity required for deployment in real-
world scenarios,,,–. It has previously been shown to operate alongside classical …

Reliable generation of single photons is of key importance for fundamental physical
experiments and to demonstrate quantum protocols. Waveguide-based photon-pair sources …

Granting information privacy is of crucial importance in our society, notably in fiber
communication networks. Quantum cryptography provides a unique means to establish, at …

We implement an entanglement distribution network based on wavelength-multiplexing and
optical switching for quantum communication applications. Using a high-brightness source …

A large amount of sensitive data must remain accessible for decades or even centuries (eg,
electronic health records, governmental documents). Communicating such data over the …

In view of real-world applications of quantum information technologies, the combination of
miniature quantum resources with existing fibre networks is a crucial issue. Among such …

The ability to generate entangled photon pairs over a broad wavelength range opens the
door to the simultaneous distribution of entanglement to multiple users in a network by using …

We demonstrate a distribution of frequency-multiplexed polarization-entangled photon pairs
over 16 frequency channels using demultiplexers for the signal and idler photons with a …

Dense Wavelength Division Multiplexing (DWDM) is a key technology for realizing high-
capacity and flexible quantum communication networks. In addition, to realize the emerging …