State-dependent lattices for quantum computing with alkaline-earth-metal atoms

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Daley, A. J. and Ye, J. and Zoller, P. (2011) State-dependent lattices for quantum computing with alkaline-earth-metal atoms. European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics, 65 (1-2). pp. 207-217. ISSN 1434-6060 (https://doi.org/10.1140/epjd/e2011-20095-2)

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Abstract

Recent experimental progress with Alkaline-Earth atoms has opened the door to quantum computing schemes in which qubits are encoded in long-lived nuclear spin states, and the metastable electronic states of these species are used for manipulation and readout of the qubits. Here we discuss a variant of these schemes, in which gate operations are performed in nuclear-spin-dependent optical lattices, formed by near-resonant coupling to the metastable excited state. This provides an alternative to a previous scheme [Phys. Rev. Lett. 101, 170504 (2008)], which involved independent lattices for different electronic states. As in the previous case, we show how existing ideas for quantum computing with Alkali atoms such as entanglement via controlled collisions can be freed from important technical restrictions. We also provide additional details on the use of collisional losses from metastable states to perform gate operations via a lossy blockade mechanism.

ORCID iDs

Daley, A. J. ORCID logoORCID: https://orcid.org/0000-0001-9005-7761, Ye, J. and Zoller, P.;
  • Item type:Article
    ID code:48877
    Dates:
    Date
    Event
    November 2011
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:30 Jun 2014 12:39
    Last modified:11 Nov 2024 10:44
    URI:https://strathprints.strath.ac.uk/id/eprint/48877
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