Microwave-induced changes in the optical emission of the NV center in diamond have previously been attributed to magnetic resonance of the defect in its A ground state [E. van Oort et al. , J. Phys. C 21, 4385 (1988)]. In this paper, the focus is on the origin of the hyperfine splittings that are observed in the optically detected magnetic-resonance (ODMR) spectra at zero and low magnetic field...

Due to their narrow homogeneous linewidths, rare-earth ions in inorganic crystals at low temperatures have recently been given considerable attention as test materials for experiments in coherent quantum optics. Because these narrow linewidth transitions have been buried in a wide inhomogeneous line, the scope of experiments that could be carried out in these materials has been limited. However...

We study the deterministic entanglement of a pair of neutral atoms trapped in an optical lattice by coupling to excited-state molecular hyperfine potentials. Information can be encoded in the ground-state hyperfine levels and processed by bringing atoms together pair-wise to perform quantum logical operations through induced electric dipole-dipole interactions. The possibility of executing both...