Quantum-mechanical effects at the macroscopic level were first explored in Josephson-
junction-based superconducting circuits in the 1980s. In recent decades, the emergence of …

Recent experiments have demonstrated that light and matter can mix together to an extreme
degree, and previously uncharted regimes of light-matter interactions are currently being …

Engineered quantum systems enabling novel capabilities for computation and sensing have
blossomed in the last decade. Architectures benefiting from combining complementary …

In the past 20 years, impressive progress has been made both experimentally and
theoretically in superconducting quantum circuits, which provide a platform for manipulating …

Topological photonics is a rapidly emerging field of research in which geometrical and
topological ideas are exploited to design and control the behavior of light. Drawing …

Combining different physical systems in hybrid quantum circuits opens up novel possibilities
for quantum technologies. In quantum magnonics, quanta of collective excitation modes in a …

The duration and fidelity of qubit readout are critical factors for applications in quantum-
information processing as they limit the fidelity of algorithms which reuse qubits after …

To create and manipulate non-classical states of light for quantum information protocols, a
strong, nonlinear interaction at the single-photon level is required. One approach to the …

Photonic cat states stored in high-Q resonators show great promise for hardware efficient
universal quantum computing. We propose an approach to efficiently prepare such cat …

Enhancing optical nonlinearities so that they become appreciable on the single photon level
and lead to nonclassical light fields has been a central objective in quantum optics for many …