BACKGROUND The past two decades have seen intense efforts aimed at building quantum
computing hardware with the potential to solve problems that are intractable on classical …

This review describes recent groundbreaking results in Si, Si/SiGe, and dopant-based
quantum dots, and it highlights the remarkable advances in Si-based quantum physics that …

Although silicon is a promising material for quantum computation, the degeneracy of the
conduction band minima (valleys) must be lifted with a splitting sufficient to ensure the …

Exact, analytic expressions for the valence band effective masses in the spin-orbit, sp 3 d 5
s* empirical tight-binding model are derived. These expressions together with an automated …

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 …

We demonstrate a reconfigurable quantum dot gate architecture that incorporates two
interchangeable transport channels. One channel is used to form quantum dots, and the …

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

Silicon has many attractive properties for quantum computing, and the quantum-dot
architecture is appealing because of its controllability and scalability. However, the multiple …

A defining feature of modern CMOS devices and almost all quantum semiconductor
devices,,,,,,, is the use of many different materials. For example, although electrical …

We present an effective mass theory for Si Ge∕ Si∕ Si Ge quantum wells, with an emphasis
on calculating the valley splitting. The theory introduces a valley coupling parameter vv …