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

  • Authors:

  • Alessio Serafini;Alex Retzker;Martin B. Plenio

  • Affiliations:

  • Department of Physics and Astronomy, University College London, London, UK WC1E 6BT;Institute for Mathematical Sciences, Imperial College London, London, UK SW7 2PG and QOLS, Blackett Laboratory, Imperial College London, London, UK SW7 2BW and Intitut für Theoretische Physik ...;Institute for Mathematical Sciences, Imperial College London, London, UK SW7 2PG and QOLS, Blackett Laboratory, Imperial College London, London, UK SW7 2BW and Intitut für Theoretische Physik ...

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2009

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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.