Re:not a qbit (Score 1)

What I gave was a *very* rough sketch of the mechanics behind it. I don't claim to be an expert on quantum information theory, nor on constructing ion traps. I can assure you however that the manipulation of the electron's quantum state involves much less "fumbling" than you described. These spin-spin manipulations are carried out with a finely tuned YAG laser which is optically doubled (a few times over) to the correct frequency for the desired transition (the laser is referenced to a rubidium cell, perhaps, as reference). I'm certainly not denying the potential of the types of QC's you mention - perhaps you might elaborate on the enhanced "computing power" you'd expect from nuclear-based quantum computers? As for evidence of the merits of these ion-trap QCs, I suggest articles by D. Wineland (NIST) and C. Monroe (Formerly of NIST, now at Univ. Michigan).