We propose a new concept for a two-qubit gate operating on a pair of trapped ions based on laser coherent control techniques. The gate is insensitive to the temperature of the ions, works also outside the Lamb-Dicke regime, requires no individual addressing by lasers, and can be orders of magnitude faster than the trap period.
@article{arxiv.quant-ph/0306006,
title = {Fast and robust two-qubit gates for scalable ion trap quantum computing},
author = {J. J. Garcia-Ripoll and P. Zoller and J. I. Cirac},
journal= {arXiv preprint arXiv:quant-ph/0306006},
year = {2007}
}