Many-particle localization by constructed disorder: enabling quantum   computing with perpetually coupled qubits
  We demonstrate that, in a many-particle system, particles can be strongly confined to their sites. The localization is obtained by constructing a sequence of on-site energies that efficiently suppresses resonant hopping. The time during which a many-particle state remains strongly localized in an infinite chain can exceed the reciprocal hopping frequency by $\agt 10^6$ already for a narrow energy bandwidth. The results show viability of quantum computers with time-independent qubit coupling. 
M.I. Dykman, F.M. Izrailev, L.F. Santos, and M. Shapiro