Using quantum state protection via dissipation in a quantum-dot molecule   to solve the Deutsch problem
  The wide set of control parameters and reduced size scale make semiconductor quantum dots attractive candidates to implement solid-state quantum computation. Considering an asymmetric double quantum dot coupled by tunneling, we combine the action of a laser field and the spontaneous emission of the excitonic state to protect an arbitrary superposition state of the indirect exciton and ground state. As a by-product we show how to use the protected state to solve the Deutsch problem. 
M. M. Santos, F. O. Prado, H. S. Borges, A. M. Alcalde, J. M.   Villas-B\^oas, and E. I. Duzzioni
quant-ph cond-mat.mes-hall