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Generation of continuous variable squeezing and entanglement of trapped ions in time-varying potentials

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Abstract

We investigate the generation of squeezing and entanglement for the motional degrees of freedom of ions in linear traps, confined by time-varying and oscillating potentials, comprised of a DC and an AC component. We show that high degrees of squeezing and entanglement can be obtained by controlling either the DC or the AC trapping component (or both), and by exploiting transient dynamics in regions where the ions’ motion is unstable, without any added optical control. Furthermore, we investigate the time-scales over which the potentials should be switched in order for the manipulations to be most effective.

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Authors and Affiliations

  1. Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, UK

    Alessio Serafini

  2. Institute for Mathematical Sciences, Imperial College London, 53 Prince’s Gate, London, SW7 2PG, UK

    Alex Retzker & Martin B. Plenio

  3. QOLS, Blackett Laboratory, Imperial College London, London, SW7 2BW, UK

    Alex Retzker & Martin B. Plenio

  4. Intitut für Theoretische Physik, Universität Ulm, 89069, Ulm, Germany

    Alex Retzker & Martin B. Plenio

Authors
  1. Alessio Serafini
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  2. Alex Retzker
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  3. Martin B. Plenio
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Correspondence to Martin B. Plenio.

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Serafini, A., Retzker, A. & Plenio, M.B. Generation of continuous variable squeezing and entanglement of trapped ions in time-varying potentials. Quantum Inf Process 8, 619–630 (2009). https://doi.org/10.1007/s11128-009-0141-x

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  • DOI: https://doi.org/10.1007/s11128-009-0141-x

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