We propose a planar architecture for scalable quantum information processing (QIP) that includes X-junctions through which particles can move without micromotion. This is achieved by adjusting radio frequency (rf) amplitudes to move an rf null along the legs of the junction. We provide a proof-of-principle by transporting dust particles in three dimensions via adjustable rf potentials in a 3D trap. For the proposed planar architecture, we use regularization techniques to obtain amplitude settings that guarantee smooth transport through the X-junction.
@article{arxiv.1011.6116,
title = {Transport of charged particles by adjusting rf voltage amplitudes},
author = {Todd Karin and Isabela Le Bras and Andreas Kehlberger and Kilian Singer and Nikos Daniilidis and Hartmut Häffner},
journal= {arXiv preprint arXiv:1011.6116},
year = {2012}
}