Persistent current joints are crucial components of superconducting magnets—enabling the
production of the high and ultra-stable magnetic fields required, for instance, for magnetic …

Materials imperfections in planar superconducting quantum circuits—in particular, two-level-
system (TLS) defects—contribute significantly to decoherence, ultimately limiting the …

Recently, Nb superconducting radio frequency cavities vacuum heat treated between 300
and 400 C for a few hours have exhibited very high quality factors (∼ 5× 10 10 at 2.0 K) …

Niobium and tantalum are found together in natural minerals. Leaching with concentrated
acid solution or alkaline roasting followed by water/dilute acid leaching results in a solution …

MXenes are a family of two-dimensional (2D) materials typically formed by etching the A
element from a parent MAX phase. Computational screening for other 3D precursors …

Electrochemical machining (ECM) using the bipolar pulse technique shows significant
potential for the effective machining of prone-to-passivation materials. However, despite its …

Foreword from author; When I joined the CEA Saclay SRF group in 1989, my initial
background was physical chemistry and surface science, which I completed later on with …

Josephson junctions based on InAs semiconducting nanowires and Nb superconducting
electrodes are fabricated in situ by a special shadow evaporation scheme for the …

Annealing is a heat treatment that alters the physical and sometimes chemical properties of
a material to improve their crystalline structure and other important properties. This work …

Quantum sensing and computation can be realized with superconducting microwave
circuits. Qubits are engineered quantum systems of capacitors and inductors with non-linear …