%0 Journal Article
%J Physical Review A
%D 2004
%T Relativistic many-body calculations of electric-dipole matrix elements, lifetimes and polarizabilities in rubidium
%A M. S. Safronova
%A Carl J. Williams
%A Charles W. Clark
%X Electric-dipole matrix elements for ns-n'p, nd-n'p, and 6d-4f transitions in Rb are calculated using a relativistic all-order method. A third-order calculation is also carried out for these matrix elements to evaluate the importance of the high-order many-body perturbation theory contributions. The all-order matrix elements are used to evaluate lifetimes of ns and np levels with n=6, 7, 8 and nd levels with n=4, 5, 6 for comparison with experiment and to provide benchmark values for these lifetimes. The dynamic polarizabilities are calculated for ns states of rubidium. The resulting lifetime and polarizability values are compared with available theory and experiment.
%B Physical Review A
%V 69
%8 2004/2/27
%G eng
%U http://arxiv.org/abs/physics/0307057v1
%N 2
%! Phys. Rev. A
%R 10.1103/PhysRevA.69.022509
%0 Journal Article
%J Physical Review A
%D 2003
%T Optimizing the fast Rydberg quantum gate
%A M. S. Safronova
%A Carl J. Williams
%A Charles W. Clark
%X 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.
%B Physical Review A
%V 67
%8 2003/4/17
%G eng
%U http://arxiv.org/abs/quant-ph/0212081v1
%N 4
%! Phys. Rev. A
%R 10.1103/PhysRevA.67.040303