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arXiv · 0710.1204

Ion trap quantum gates with amplitude-modulated laser beams

Christian F. Roos
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Abstract

In ion traps, entangling gate operations can be realized by a bichromatic pair of laser beams that collectively interact with the ions. In this paper, a new method of modelling the laser-ion interaction is introduced that turns out to be superior to standard techniques for the description of gate operations on optical qubits. The treatment allows for a comparison of the performance of gates based on $σ_z\otimesσ_z$ and Mølmer-Sørensen interactions on optical transitions where the bichromatic laser field can be realized by an amplitude-modulated laser resonant with the qubit transition. Shaping the amplitude of the bichromatic laser pulse is shown to make the gates more robust against experimental imperfections.

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Christian F. Roos. 2008-01-14. Ion trap quantum gates with amplitude-modulated laser beams. https://doi.org/10.1088/1367-2630%2F10%2F1%2F013002

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