A conventional topological insulator (TI) has gapped bulk states but gapless edge states.
The emergence of the gapless edge states is dictated by the bulk topological invariant of the …

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 …

Realizing topological superconductivity and Majorana zero modes in the laboratory is a
major goal in condensed-matter physics. In this Review, we survey the current status of this …

During the last ten years, superconducting circuits have passed from being interesting
physical devices to becoming contenders for near-future useful and scalable quantum …

The mathematical field of topology has become a framework in which to describe the low-
energy electronic structure of crystalline solids. Typical of a bulk insulating three …

We present measurements and simulations of semiconductor-superconductor
heterostructure devices that are consistent with the observation of topological …

Inhomogeneous superconductors can host electronic excitations, known as Andreev bound
states (ABSs), below the superconducting energy gap. With the advent of topological …

Among the major avenues that are being pursued for realizing quantum bits, the Majorana-
based approach has been the most recent to be launched. It attempts to realize qubits that …

As quantum processors grow in complexity, attention is moving to the scaling prospects of
the entire quantum computing system, including the classical support hardware. Recent …

Scaled-up quantum computers will require control interfaces capable of the manipulation
and readout of large numbers of qubits, which usually operate at millikelvin temperatures …