Non-commuting dynamics in light-ion-interactions in an ion trap system
POSTER
Abstract
Laser-driven interactions are ubiquitous in trapped-ion systems for quantum computing or simulation. As the laser power is increased to strengthen the interaction, non-commuting terms that could originally be ignored start having a significant effect on the dynamics. Here we present two methods to mitigate the effect of those terms.
Firstly, we control the phase of the laser field at the ion position using a free-space phase-stable standing wave and show how to coherently suppress a non-computing error source in the conventional Mølmer-Sørensen (MS) interaction. This approach allows us to break the fundamental speed limit in standard MS gates. Secondly, we present our experimental work on utilising non-commuting terms to create two-qubit entanglement suitable for optical, metastable, and ground state qubit encodings [1].
[1] Bazavan, Saner et al., arXiv:2207.11193, 2022
Firstly, we control the phase of the laser field at the ion position using a free-space phase-stable standing wave and show how to coherently suppress a non-computing error source in the conventional Mølmer-Sørensen (MS) interaction. This approach allows us to break the fundamental speed limit in standard MS gates. Secondly, we present our experimental work on utilising non-commuting terms to create two-qubit entanglement suitable for optical, metastable, and ground state qubit encodings [1].
[1] Bazavan, Saner et al., arXiv:2207.11193, 2022
Presenters
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Oana Bazavan
University of Oxford
Authors
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Oana Bazavan
University of Oxford
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Sebastian Saner
University of Oxford
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Donovan Webb
University of Oxford
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Gabriel Araneda
University of Oxford
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David M Lucas
University of Oxford
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Raghavendra Srinivas
University of Oxford/Oxford Ionics, University of Oxford
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Chris J Ballance
University of Oxford, University of Oxford/Oxford Ionics, Department of Physics, University of Oxford