As quantum technologies develop, a specific class of electrically conducting materials is
rapidly gaining interest because they not only form the core quantum‐enabled elements in …

Noise within solid-state systems at low temperatures can typically be traced back to material
defects. In amorphous materials, these defects are broadly described by the tunneling two …

Improving the qubit's lifetime (T1) is crucial for fault-tolerant quantum computing. Recent
advancements have shown that replacing niobium (Nb) with tantalum (Ta) as the base metal …

We propose to directly and quantum-coherently couple a superconducting transmon qubit to
magnons—the quanta of the collective spin excitations, in a nearby magnetic particle. The …

A strained Ge quantum well, grown on a SiGe/Si virtual substrate and hosting two
electrostatically defined hole spin qubits, is nondestructively investigated by synchrotron …

We demonstrate aluminum-on-silicon planar transmon qubits with time-averaged T 1 energy
relaxation times of up to 270 μs, corresponding to Q= 5 million, and a highest observed …

Molecular electron spin qubits arranged in precise arrays have great potential for use in
quantum information science applications. Molecular qubits are synthetically versatile and …

Surface structures on radio-frequency (RF) superconductors are crucially important in
determining their interaction with the RF field. Here we investigate the surface compositions …

Superconducting thin films of niobium have been extensively employed in transmon qubit
architectures. Although these architectures have demonstrated improvements in recent …

Superconducting quantum circuits (SQC) are one of the most promising hardware platforms
for quantum computing, yet their performance is currently limited by the presence of various …