TY - JOUR T1 - Alkaline-Earth-Metal Atoms as Few-Qubit Quantum Registers JF - Physical Review Letters Y1 - 2009 A1 - Alexey V. Gorshkov A1 - Ana Maria Rey A1 - Andrew J. Daley A1 - Martin M. Boyd A1 - Jun Ye A1 - Peter Zoller A1 - Mikhail D. Lukin AB - We propose and analyze a novel approach to quantum information processing, in which multiple qubits can be encoded and manipulated using electronic and nuclear degrees of freedom associated with individual alkaline-earth atoms trapped in an optical lattice. Specifically, we describe how the qubits within each register can be individually manipulated and measured with sub-wavelength optical resolution. We also show how such few-qubit registers can be coupled to each other in optical superlattices via conditional tunneling to form a scalable quantum network. Finally, potential applications to quantum computation and precision measurements are discussed. VL - 102 UR - http://arxiv.org/abs/0812.3660v2 CP - 11 J1 - Phys. Rev. Lett. U5 - 10.1103/PhysRevLett.102.110503 ER -