Silicon-based Quantum Computing Reaches Accuracy Milestone

Three separate teams of researchers worldwide have demonstrated more life to silicon-based quantum computing than previously expected. In independent experiments, the teams showcased quantum architectures operating above the 99 percent accuracy threshold – the requirement for fault-tolerant computing and a crucial milestone for the utility of quantum systems.

Hailing from Australia, the Netherlands, and Japan, all three teams demonstrated above 99 percent accuracy for one and two-qubit operations – the simplest quantum matrixes. Their approaches differ, however. The Delft University of Technology, Netherlands, and the RIKEN Institute, Japan teams operated silicon quantum-dot-based systems. The University of New South Wales, Australia team created their three-qubit system by pairing an electron to their system of two phosphorus nuclei via ion implantation into the silicon – one of the fundamental processes for making traditional microchips.