Towards a mixed-species trapped-ion quantum network

ORAL

Abstract

A larger system of trapped-ion qubits can be constructed using a modular approach with photonic interfaces. Starting from an entangled state of two 88Sr+ ions in spatially separate ion traps generated from such an interface [1], we want to transfer the entanglement to 43Ca+ “memory” qubits within each trap for further networking applications. For this transfer we require mixed species entanglement that does not degrade the basic remote entanglement fidelity of 94%. This fidelity can subsequently be improved through remote entanglement distillation, requiring high fidelity single species gates between the 43Ca+ ions. We discuss the design considerations involved in choosing optimal gate mechanisms.

[1] PRL 124, 110501 (2020)

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Presenters

  • bethan nichol

    • University of Oxford

Authors

  • bethan nichol

    • University of Oxford

  • David Nadlinger

    • University of Oxford

  • Peter Drmota

    • University of Oxford

  • Dougal Main

    • University of Oxford
    • Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, U.K.

  • Raghavendra Srinivas

    • University of Oxford
    • University of Colorado, Boulder

  • Gabriel Araneda

    • University of Oxford

  • Christopher Ballance

    • Department of Physics, University of Oxford
    • University of Oxford

  • David Lucas

    • University of Oxford
    • Department of Physics, University of Oxford