An NMR-based nanostructure switch for quantum logic
  We propose a nanostructure switch based on nuclear magnetic resonance (NMR) which offers reliable quantum gate operation, an essential ingredient for building a quantum computer. The nuclear resonance is controlled by the magic number transitions of a few-electron quantum dot in an external magnetic field. 
John H. Reina (1), Luis Quiroga (2), Neil F. Johnson (1) ((1) Oxford   University, UK, (2) Universidad de los Andes, Colombia)