Session B29: Advances in Ion Trap Quantum Computation

11:15 AM–2:15 PM, Monday, March 21, 2011
Room: C148

Sponsoring Unit: GQI
Chair: Jungsang Kim, Duke University

Abstract ID: BAPS.2011.MAR.B29.13

Abstract: B29.00013 : Scalable micro-scale optics for planar ion traps

2:03 PM–2:15 PM

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  True Merrill
    (Georgia Institute of Technology)

  Harley Hayden
    (Georgia Tech Research Institute)

  Chien-Shing Pai
    (Georgia Tech Research Institute)

  Rachel Noek
    (Duke University)

  Jungsang Kim
    (Duke University)

  Curtis Volin
    (Georgia Tech Research Institute)

Efficient collection of fluorescence from atomic ions is required for fast high-fidelity measurement in ion trap quantum information processing. Conventional multi-element lens stacks can achieve photon collection efficiencies as high as 5\%, however these systems typically have restricted field-of-view and are not generally scalable to image large arrays of ions. We report the development and fabrication of planar traps with integrated micro-scale spherical mirrors with an expected 15\% collection efficiency. The mirror shape is controlled with a combination of silicon wet-processing and polishing techniques while maintaining a surface roughness below $\sigma_{RMS} < 10$ nm. The design allows for multiple integrated mirrors in a single chip allowing for the simultaneous measurement of many ions over a 10 mm object space.

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