Dephasing-Controlled Particle Transport Devices
  We study the role of dephasing in transport through different structures. We show that interference effects invalidate Kirchhoff's circuit laws in quantum devices. We present circuits where the particle transport and the direction of rectification can be controlled through the dephasing strength. This suggests the possibility of constructing molecular devices with new functionalities which use dephasing as a control parameter. 
Edin Kapetanovi\'c, C\'esar A. Rodr\'iguez-Rosario and Thomas   Frauenheim
quant-ph