



01061nas a2200145   4500008004100000245004500041210004500086260001400131490000700145520065100152100002200803700002300825700002300848856004400871       2003                        eng d00aOptimizing the fast Rydberg quantum gate0 aOptimizing the fast Rydberg quantum gate  c2003/4/170 v673 a  The fast phase gate scheme, in which the qubits are atoms confined in sites
of an optical lattice, and gate operations are mediated by excitation of
Rydberg states, was proposed by Jaksch et al. Phys. Rev. Lett. 85, 2208 (2000).
A potential source of decoherence in this system derives from motional heating,
which occurs if the ground and Rydberg states of the atom move in different
optical lattice potentials. We propose to minimize this effect by choosing the
lattice photon frequency \omega so that the ground and Rydberg states have the
same frequency-dependent polarizability \alpha(omega). The results are
presented for the case of Rb.
1 aSafronova, M., S.1 aWilliams, Carl, J.1 aClark, Charles, W.  uhttp://arxiv.org/abs/quant-ph/0212081v1