Abstract
We calculate the stationary current through two double quantum dots which are interacting via a common phonon environment. Numerical and analytical solutions of a master equation in the stationary limit show that the current can be increased as well as decreased due to a dissipation mediated interaction. This effect is closely related to collective, spontaneous emission of phonons (Dicke super-radiance and subradiance effect), and the generation of a “cross-coherence” with entanglement of charges in singlet or triplet states between the dots. Furthermore, we discuss an inelastic “current switch” mechanism by which one double dot controls the current of the other.
- Received 7 November 2002
DOI:https://doi.org/10.1103/PhysRevB.68.035309
©2003 American Physical Society