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Micromotion-enabled improvement of quantum logic gates with trapped ions
New Journal of Physics, Volume: 19, Issue: 11, Start page: 113038
Swansea University Author: Markus Muller
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DOI (Published version): 10.1088/1367-2630/aa86eb
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 infor- mation processing. In this work, we introduce a particular scheme where this beh...
| Published in: | New Journal of Physics |
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| ISSN: | 1367-2630 |
| Published: |
2017
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa36264 |
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| 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 infor- mation 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 side- bands, 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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| Keywords: |
Quantum Computing, Trapped Ions, Quantum Optics, Micromotion, Entanglement |
| College: |
Faculty of Science and Engineering |
| Issue: |
11 |
| Start Page: |
113038 |