Semiconductors, a significant type of material in the information era, are becoming more and
more powerful in the field of quantum information. In recent decades, semiconductor …

The band structure and electronic properties of a material are defined by the sort of
elements, the atomic registry in the crystal, the dimensions, the presence of spin–orbit …

The electrical characterisation of classical and quantum devices is a critical step in the
development cycle of heterogeneous material stacks for semiconductor spin qubits. In the …

Large-scale arrays of quantum-dot spin qubits in Si/SiGe quantum wells require large or
tunable energy splittings of the valley states associated with degenerate conduction band …

Silicon/silicon-germanium heterostructures have many important advantages for hosting
spin qubits. However, controlling the valley splitting (the energy splitting between the two …

Coherent coupling between distant qubits is needed for many scalable quantum computing
schemes. In quantum dot systems, one proposal for long-distance coupling is to coherently …

Electron spins in silicon offer a competitive, scalable quantum‐computing platform with
excellent single‐qubit properties. However, the two‐qubit gate fidelities achieved so far have …

Electron spins in silicon quantum dots are excellent qubits because they have long
coherence times and high gate fidelities and are compatible with advanced semiconductor …

Silicon-quantum-dot qubits must contend with low-lying valley excited states that are
sensitive functions of the quantum-well heterostructure and disorder; quantifying and …

Silicon-germanium heterostructures have successfully hosted quantum dot qubits, but the
intrinsic near-degeneracy of the two lowest valley states poses an obstacle to high-fidelity …