Nearest-neighbor coupling asymmetry in the generation of cluster states
arXiv:1001.2877 · doi:10.1103/PhysRevB.82.085326
Abstract
We demonstrate that charge-qubit cluster state generation by capacitive coupling is anisotropic. Specifically, horizontal vs vertical nearest-neighbor inter-qubit coupling differs in a rectangular lattice. We show how to ameliorate this anisotropy by applying potential biases to the array of double dots.
7 pages, 2 figures