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Published October 24, 2008 | Published
Journal Article Open

Quantum Computing with Alkaline-Earth-Metal Atoms


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 1S0 and 3P0 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 3P2 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.

Additional Information

© 2008 The American Physical Society. (Received 14 August 2008; published 23 October 2008) We thank C. Greene, M. Lukin, A. Gorshkov, and L.-M. Duan for useful discussions. A.J.D. thanks the Institute for Quantum Information at Caltech for support, and A.J.D., J.Y., and P.Z. thank Caltech for hospitality. Work at JILA is supported by DARPA, NIST, and NSF, and work in Innsbruck is supported by the Austrian Science Foundation (FWF), and by the EU Network NAMEQUAM.

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