Quantum computing with alkaline-earth-metal atoms

Daley, A.J. and Boyd, M.M. and Ye, J. and Zoller, P. (2008) Quantum computing with alkaline-earth-metal atoms. Physical Review Letters, 101 (17). 170504. ISSN 0031-9007

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    We present a complete scheme for quantum information processing using the unique features of alkaline-earth-metal atoms. We show how two completely independent lattices can be formed for the S01 and P03 states, with one used as a storage lattice for qubits encoded on the nuclear spin, and the other as a transport lattice to move qubits and perform gate operations. We discuss how the P23 level can be used for addressing of individual qubits, and how collisional losses from metastable states can be used to perform gates via a lossy blockade mechanism.