from the hope-for-qubits dept.
waynerad writes "For the first time, University of Wisconsin-Madison scientists have designed a semiconductor-based device that can trap individual electrons and line them up, an advance that could bring quantum computing out of the gee-whiz world of scientific novelty and into the practical realm. Professors Mark Eriksson and Bob Joynt ( physics), Max Lagally (materials science and engineering), and Dan van der Weide (electrical and computer engineering) have developed a new type of "quantum dot" device for holding electrons that can be scaled up to build a working quantum computer. Made from tiny amounts of the same semiconductor materials used in today's computer chips, each quantum dot device contains just one infinitesimally small electron. When many of the devices are aligned, the electrons they house become usable quantum bits, or qubits, for computing."
A preprint paper describing the technology: Design and proof of concept for silicon-based quantum dot quantum bits.