Katharina Gillen-Christandl

Comparison of Gaussian and super Gaussian laser beams for addressing atomic qubits

Abstract We study the fidelity of single-qubit quantum gates performed with two-frequency laser fields that have a Gaussian or super Gaussian spatial mode. Numerical simulations are used to account for imperfections arising from atomic motion in an optical trap, spatially varying Stark shifts of the trapping and control beams, and transverse and axial misalignment of the control beams. Numerical results that account for the three-dimensional distribution of control light show that a super Gaussian mode with intensity

1D array of dark spot traps formed by counter-propagating nested Gaussian laser beams for trapping and moving atomic qubits

I\sim \hbox {e}^{-2(r/w_0)^n}

1D optical lattice of dark spot traps formed by two nested laser beams for atom transport and quantum information applications

I∼e-2(r/w0)n provides reduced sensitivity to atomic motion and beam misalignment. Choosing a super Gaussian with

Computational Investigation of Dipole Traps Formed by the Projection of Diffraction Patterns from a Circular Aperture

n=6

Investigation of a quantum memory created by diffraction of laser light at an array of pinholes

n=6 the decay time of finite temperature Rabi oscillations can be increased by a factor of 60 compared to an