The goal of this article is to review the progress of three-electron spin qubits from their
inception to the state of the art. We direct the main focus towards the exchange-only qubit …

We report characterizations of two types of Si triple quantum dot (TQD) devices with charge
sensors, with the aim of integrating spin qubits. The QDs of a single TQD device are …

Quantum-dot cellular automata (QCA) concentrates charges using the Coulomb interaction.
Despite the nanometric scale and the extremely high projected working frequency, the need …

Traditional CMOS technology is approaching its physical limits, so employing novel
technologies such as nano-scale ones are being deployed. Quantum dots cellular automata …

As semiconductor device dimensions are reduced to the nanometer scale, the effects of high-
defect-density surfaces on the transport properties become important to such an extent that …

We demonstrate coupled triple dot operation and charge sensing capability for the recently
introduced quantum dot technology employing undoped Si/Si 0.8 Ge 0.2 hetero-structures …

We aim at embedding a quantum dot on a suspended nanowire by solving the problem of
unintentional quantum dot formation, which exacerbates in a suspended nanowire. The …

We investigate the energy spectra of three electrons in SiGe/Si/SiGe equilateral triangular
and symmetric linear triple quantum dots in the presence of magnetic (in either Faraday or …

Three laterally coupled vertical single quantum dots (tQDs) in a collinear arrangement, with
common source and drain electrodes, are investigated. The tQDs are formed inside three …

We study the local antisymmetric spin–orbit (ASO) coupling effect on spin, orbital, and
charge degrees of freedom for the Kondo effect in a triangular triple quantum dot (TTQD) …