Front Cover: Solid-State Qubit as an On-Chip Controller for Non-Classical Field States (Adv. Quantum Technol. 10/2024)

Current research in quantum matter is strongly focused on quantum computing, communication and the quantum internet. The cover shows an artist's impression of the non-classical Fock state field in a single-mode resonator (red) operating at one frequency being directed to the input of a qubit controller (middle part) and subsequently converted to the desired non-classical (e.g. N00N state) field (green) in an output single-mode resonator operating at another frequency. The results described by Dmitry Yakovlev and co-workers in article number 2400141 open up exciting new possibilities for the quantum connection between solid-state and photonic flying qubits, enabling all-quantum data processing and data transfer.