Quantum bits: SOI nanowires open up new possibility
Categorie(s) : News, Research
Published : 1 October 2018
A new step forward toward tomorrow’s quantum computers has been made. Researchers from INAC and Leti demonstrated that the spin of an electron confined in a silicon-on-insulator (SOI) nanowire can be manipulated by an electric—rather than a magnetic—field. Controlling spin using electric fields generated by grids is a standard microelectronics-industry technology. Australian and American researchers had previously predicted a tenuous effect of the electric field on electron spin, in the vicinity of a crystal step at the silicon-silicon oxide interface. The Grenoble-based researchers confined the electrons in the edges of rectangular silicon nanowires, producing the asymmetry necessary to couple the spin and electric field. A patent application for the phenomenon, called EDSR*, is currently pending.
*Electric-dipole spin resonance