Precision control of charge coherence in parallel double dot systems   through spin-orbit interaction
  In terms of the exact quantum master equation solution for open electronic systems, the coherent dynamics of two charge states described by two parallel quantum dots with one fully polarized electron on either dot is investigated in the presence of spin-orbit interaction. We demonstrate that the double dot system can stay in a dynamically decoherence free space. The coherence between two double dot charge states can be precisely manipulated through a spin-orbit coupling. The effects of the temperature, the finite bandwidth of lead, and the energy deviations during the coherence manipulation are also explored. 
Jinshuang Jin, Wei-Min Zhang, Matisse Wei-Yuan Tu, and Nien-En Wang
cond-mat.mes-hall