In this Letter, we present a physical scheme for implementing the discrete quantum Fourier transform in a coupled semiconductor double quantum dot system. The main controlled-R gate operation can be decomposed into many simple and feasible unitary transformations. The current scheme would be a useful step towards the realization of complex quantum algorithms in the quantum dot system.
@article{arxiv.0704.2091,
title = {Discrete quantum Fourier transform in coupled semiconductor double quantum dot molecules},
author = {Ping Dong and Ming Yang and Zhuo-Liang Cao},
journal= {arXiv preprint arXiv:0704.2091},
year = {2009}
}