Micromotion-enabled improvement of quantum logic gates with trapped ions

Abstract

The micromotion of ion crystals confined in Paul traps is usually considered an inconvenient nuisance, and is thus typically minimised in high-precision experiments such as high-fidelity quantum gates for quantum information processing. In this work, we introduce a particular scheme where this behavior can be reversed, making micromotion beneficial for quantum information processing. We show that using laser-driven micromotion sidebands, it is possible to engineer state-dependent dipole forces with a reduced effect of off-resonant couplings to the carrier transition. This allows one, in a certain parameter regime, to devise entangling gate schemes based on geometric phase gates with both a higher speed and a lower error, which is attractive in light of current efforts towards fault-tolerant quantum information processing. We discuss the prospects of reaching the parameters required to observe this micromotion-enabled improvement in experiments with current and future trap designs.

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Cited by in corpus (10)

• Quantum-Logic Detection of Chemical Reactions
• High Fidelity Entangling Gates in a 3D Ion Crystal under Micromotion
• Individually Addressed Entangling Gates in a Two-Dimensional Ion Crystal
• Micromotion-Enhanced Fast Entangling Gates For Trapped Ion Quantum Computing
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• Quantum suppression of cold reactions far from the s-wave energy limit
• Radio-Frequency Pseudo-Null Induced by Light in an Ion Trap