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    Scalability of quantum computation with addressable optical lattices


    Beals, T.R. and Vala, Jiri and Whaley, K.B. (2008) Scalability of quantum computation with addressable optical lattices. Physical Review A, 77 (052309). ISSN 1050-2947

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    Abstract

    We make a detailed analysis of error mechanisms, gate fidelity, and scalability of proposals for quantum computation with neutral atoms in addressable (large lattice constant) optical lattices. We have identified possible limits to the size of quantum computations, arising in three-dimensional (3D) optical lattices from current limitations on the ability to perform single-qubit gates in parallel and in 2D lattices from constraints on laser power. Our results suggest that 3D arrays as large as 100×100×100 sites (i.e., ∼106 qubits) may be achievable, provided two-qubit gates can be performed with sufficiently high precision and degree of parallelizability. The parallelizability of long-range interaction-based two-qubit gates is qualitatively compared to that of collisional gates. Different methods of performing single-qubit gates are compared, and a lower bound of 1×10−5 is determined on the error rate for the error mechanisms affecting 133Cs in a blue-detuned lattice with Raman-transition-based single-qubit gates, given reasonable limits on experimental parameters.

    Item Type: Article
    Keywords: Scalability; quantum computation; addressable optical lattices;
    Academic Unit: Faculty of Science and Engineering > Mathematical Physics
    Item ID: 10574
    Identification Number: https://doi.org/10.1103/PhysRevA.77.052309
    Depositing User: Dr. Jiri Vala
    Date Deposited: 22 Feb 2019 18:18
    Journal or Publication Title: Physical Review A
    Publisher: American Physical Society
    Refereed: Yes
    URI:

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