Gorshkov, AlexeyRey, AnaDaley, AndrewBoyd, MartinYe, JunZoller, PeterLukin, Mikhail2012-01-102009Gorshkov, Alexey, Ana Rey, Andrew Daley, Martin Boyd, Jun Ye, Peter Zoller, and Mikhail Lukin. 2009. Alkaline-earth-metal atoms as few-qubit quantum registers. Physical Review Letters 102(11): 110503.1079-7114http://nrs.harvard.edu/urn-3:HUL.InstRepos:7487811We 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.en-USJournal Article2012-01-1010.1103/PhysRevLett.102.110503