Laser-induced charging of microfabricated ion traps

@article{Wang2011LaserinducedCO,
  title={Laser-induced charging of microfabricated ion traps},
  author={Shannon X. Wang and Guang Hao Low and Nathan S. Lachenmyer and Yufei Ge and Peter F. Herskind and Isaac L. Chuang},
  journal={Journal of Applied Physics},
  year={2011},
  volume={110},
  pages={104901}
}
Electrical charging of metal surfaces due to photoelectric generation of carriers is of concern in trapped ion quantum computation systems, due to the high sensitivity of the ions’ motional quantum states to deformation of the trapping potential. The charging induced by typical laser frequencies involved in Doppler cooling and quantum control is studied here, with microfabricated surface-electrode traps made of aluminum, copper, and gold, operated at 6 K with a single Sr+ ion trapped 100 μm… 

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References

SHOWING 1-10 OF 38 REFERENCES
Trapped-ion probing of light-induced charging effects on dielectrics
We use a string of confined 40Ca+ ions to measure perturbations to a trapping potential which are caused by the light-induced charging of an antireflection-coated window and of insulating patches on
Heating rate and electrode charging measurements in a scalable, microfabricated, surface-electrode ion trap
We characterise the performance of a surface-electrode ion “chip” trap fabricated using established semiconductor integrated circuit and micro-electro-mechanical-system (MEMS) microfabrication
Electric field noise above surfaces: A model for heating rate scaling law in ion traps
  • R. Dubessy, T. Coudreau, L. Guidoni
  • Physics
    CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference
  • 2009
Device miniaturization is a challenge that raises new issues because the scaling laws valid in the macroscopic range might fail, for instance due to the emergence of a new characteristic length. Even
Implementation of a symmetric surface-electrode ion trap with field compensation using a modulated Raman effect
We describe a new electrode design for a surface-electrode Paul trap, which allows rotation of the normal modes out of the trap plane, and a technique for micromotion compensation in all directions
Suppression of heating rates in cryogenic surface-electrode ion traps.
TLDR
Heating rates in cryogenically cooled surface-electrode traps, with characteristic sizes in the 75 to 150 mum range, are characterized, and the observed noise depends strongly on the fabrication process, which suggests further improvements are possible.
Electrostatics of surface-electrode ion traps
Surface-electrode (SE) rf traps are a promising approach to manufacturing complex ion-trap networks suitable for large-scale quantum information processing. In this paper we present analytical
Ultrasensitive detection of force and displacement using trapped ions.
TLDR
It is demonstrated that crystals of trapped atomic ions behave as nanoscale mechanical oscillators and may form the core of exquisitely sensitive force and displacement detectors and enable scientists to explore new regimes in materials science where augmented force, field and displacement sensitivity may be traded against reduced spatial resolution.
Cryogenic ion trapping systems with surface-electrode traps.
We present two simple cryogenic rf ion trap systems in which cryogenic temperatures and ultra high vacuum pressures can be reached in as little as 12 h. The ion traps are operated either in a liquid
Heating of trapped ions from the quantum ground state
We have investigated motional heating of laser-cooled ${}^{9}{\mathrm{Be}}^{+}$ ions held in radio-frequency (Paul) traps. We have measured heating rates in a variety of traps with different
Planar multipole ion trap
We report on the realization of a chip-based multipole ion trap manufactured using microelectromechanical systems technology, requiring minimal manual alignment of the electrodes. It provides ion
...
1
2
3
4
...