Quantum control methods for robust entanglement of trapped ions.pdf (2.71 MB)
Quantum control methods for robust entanglement of trapped ions
journal contribution
posted on 2023-06-10, 04:51 authored by Christophe Henri Valahu, Iason ApostolatosIason Apostolatos, Sebastian WeidtSebastian Weidt, Winfried HensingerWinfried HensingerA major obstacle in the way of practical quantum computing is achieving scalable and robust high-fidelity entangling gates. To this end, quantum control has become an essential tool, as it can make the entangling interaction resilient to sources of noise. Nevertheless, it may be difficult to identify an appropriate quantum control technique for a particular need given the breadth of work pertaining to robust entanglement. To this end, we attempt to consolidate the literature by providing a non-exhaustive summary and critical analysis. The quantum control methods are separated into two categories: schemes which extend the robustness to (i) spin or (ii) motional decoherence. We choose to focus on extensions of the sx ? sx Mølmer-Sørensen interaction using microwaves and a static magnetic field gradient. Nevertheless, some of the techniques discussed here can be relevant to other trapped ion architectures or physical qubit implementations. Finally, we experimentally realize a proof-of-concept interaction with simultaneous robustness to spin and motional decoherence by combining several quantum control methods presented in this manuscript.
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Publication status
- Published
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- Published version
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Journal of Physics B: Atomic, Molecular and Optical PhysicsISSN
0953-4075Publisher
IOP PublishingExternal DOI
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52Page range
a204003 1-26Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
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- Yes
Legacy Posted Date
2022-09-27First Open Access (FOA) Date
2022-09-27First Compliant Deposit (FCD) Date
2022-09-27Usage metrics
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