A road to reality with topological superconductors
  Topological states of matter are a source of low-energy quasiparticles, bound to a defect or propagating along the surface. In a superconductor these are Majorana fermions, described by a real rather than a complex wave function. The absence of complex phase factors promises protection against decoherence in quantum computations based on topological superconductivity. This is a tutorial style introduction written for a Nature Physics focus issue on topological matter. 
C.W.J. Beenakker and L.P. Kouwenhoven
cond-mat.supr-con cond-mat.mes-hall