Ion trap quantum gates with amplitude-modulated laser beams

2007/10/31 by Christian F. Roos · 2 citations
Physics and Astronomy · #quant-ph

paper · pdf · doi:10.1088/1367-2630/10/1/013002

published as New Journal of Physics 10, 013002 (2008) · 20 pages. Slightly revised version

arxiv created 2008/01/14 · arxiv updated 2009/12/01

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⊗σ_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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• S-SYNC: Shuttle and Swap Co-Optimization in Quantum Charge-Coupled Devices
• Applications of Spin-Dependent Generalized Squeezing in Hybrid Spin-Oscillator Quantum Processors

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