The significant advance, by a team at the University of New South Wales (UNSW) in Sydney appears in the international journalNature.
“What we have is a game changer,” said team leader Andrew Dzurak, Scientia Professor and Director of the Australian National Fabrication Facility at UNSW.
“We’ve demonstrated a two-qubit logic gate — the central building block of a quantum computer — and, significantly, done it in silicon. Because we use essentially the same device technology as existing computer chips, we believe it will be much easier to manufacture a full-scale processor chip than for any of the leading designs, which rely on more exotic technologies.
“This makes the building of a quantum computer much more feasible, since it is based on the same manufacturing technology as today’s computer industry,” he added. Continue reading
Physicists from France and Russia have discovered magnetic disturbances in 2D superconductor layer, resembling little oscillating stars. These star-like excitations are caused by a single magnetic atom put into the layer of superconducting material. What they mean is that now the Yu-Shibo-Rusinov chains are proved to exist not only in theory. Moreover, it was found out that in the two-dimensional systems the magnetic disturbances spread on longer distances and seem to be more sustainable — which brings us a step closer towards the long-awaited quantum computers. The results were published inNature Physics this week.
According to one of the study’s co-authors from MIPT, the observed effect looks like magnetic “nanostars in the superconducting universe”; building constellations of them can be used in quantum electronics. Continue reading