Quantum key distribution (QKD) can greatly benefit from photonic integration, which enables
implementing low-loss, alignment-free, and scalable photonic circuitry. At the same time …

We present an approach to increase the effective light-receiving area of superconducting
nanowire single-photon detectors (SNSPD) by free-form microlenses. These lenses are …

Photonic integrated circuits (PIC) become increasingly important for numerous applications.
Mass production of PIC has become widely available, but large-volume low-cost photonic …

Upcoming quantum technologies require scalable and cost-efficient technical solutions for
widespread functionality. In order to exploit the quantum states of light, single-photon …

Over the past two decades the performance of superconducting quantum bits (qubits) has
been improved tremendously: the coherence time of individual qubits has been increased …

Quantum key distribution (QKD) can greatly benefit from photonic integration, which enables
implementing low-loss, alignment-free, and scalable photonic circuitry. At the same time …