Quantum cryptography is arguably the fastest growing area in quantum information science.
Novel theoretical protocols are designed on a regular basis, security proofs are constantly …

Over the past several decades, quantum information science has emerged to seek answers
to the question: can we gain some advantage by storing, transmitting and processing …

Quantum communication holds promise for unconditionally secure transmission of secret
messages and faithful transfer of unknown quantum states. Photons appear to be the …

In order to bring quantum networks into the real world, we would like to determine the
requirements of quantum network protocols including the underlying quantum hardware …

Quantum information processing exploits the quantum nature of information. It offers
fundamentally new solutions in the field of computer science and extends the possibilities to …

We review the theory of continuous-variable entanglement with special emphasis on
foundational aspects, conceptual structures and mathematical methods. Much attention is …

Solid-state cavity quantum electrodynamics (QED) systems offer a robust and scalable
platform for quantum optics experiments and the development of quantum information …

Crystal defects can confine isolated electronic spins and are promising candidates for solid-
state quantum information. Alongside research focusing on nitrogen-vacancy centres in …

Quantum networks build on entanglement and quantum measurement to achieve tasks that
are beyond the reach of classical systems. Using quantum effects, we can detect the …

We give a review on entanglement purification for bipartite and multipartite quantum states,
with the main focus on the theoretical work carried out by our group in the last couple of …