Line generated 2D grid for neutral atom trapping

ORAL

Abstract

A phase-insensitive light field is desirable for stably trapping neutral atoms for quantum computing. Techniques are presented for creating a rectilinear array of atom trapping sites using holographically shaped beams with a gaussian profile in one transverse dimension, and a top-hat line profile in the other transverse dimension. This line generated grid creates an inherently 2D trap array at the focal plane, so that a low-crosstalk addressable qubit register may be implemented. The light field is projected from only one direction, and is insensitive to phase fluctuations and to misalignment in 2 degrees of freedom. This technique creates traps with depth twice that of previous singly-projected designs. Preliminary results for an 81-site cesium qubit register are presented.

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Authors

  • Martin Lichtman

    University of Wisconsin, Madison, University of Wisconsin, University of Wisconsin-Madison

  • Mark Saffman

    University of Wisconsin, Madison, Department of Physics, University of Wisconsin, 1150 University Avenue, Madison, Wisconsin 53706, Department of Physics, University of Wisconsin, Madison, WI., University of Wisconsin, University of Wisconsin-Madison