Design, fabrication and characterization of a micro-fabricated stacked-wafer segmented ion trap with two X-junctions
Open accessAbstract
We describe the implementation of a three-dimensional Paul ion trap fabricated from a stack of precision-machined silica glass wafers, which incorporates a pair of junctions for two-dimensional ion transport. The trap has 142 dedicated electrodes which can be used to define multiple potential wells in which strings of ions can be held. By supplying time-varying potentials, this also allows for transport and re-configuration of ion strings. We describe the design, simulation, fabrication and packaging of the trap, including explorations of different parameter regimes and possible optimizations and design choices. We give results of initial testing of the trap, including measurements of heating rates and junction transport.
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Helios uses a four-way 'X' junction to connect memory regions to quantum logic regions without increasing electrical control or device fabrication complexity.
“Second, Helios uses a four-way ‘X’ junction10,11,29–35 to connect memory regions to quantum logic regions without increasing electrical control or device fabrication complexity.”
From A 98-qubit trapped-ion quantum computer with all-to-all connectivity (2026) · cites this paper as [31]
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Self-citationHigh-Rate, High-Fidelity Entanglement of Qubits Across an Elementary Quantum Network
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A high-fidelity quantum matter-link between ion-trap microchip modules
Akhtar, M., Bonus, F., Lebrun-Gallagher, F. R., Johnson, N. I., Siegele-Brown, M., Hong, S., Hile, S. J., Kulmiya, S. A., Weidt, S., & Hensinger, W. K. (2023) · Nature Communications · doi:10.1038/s41467-022-35285-3 · Cited by 59 · see citing works
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Transport of Multispecies Ion Crystals through a Junction in a Radio-Frequency Paul Trap
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Optimization and implementation of a surface-electrode ion trap junction
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Self-citationA 98-qubit trapped-ion quantum computer with all-to-all connectivity
Ransford, A., Allman, M. S., Arkinstall, J., Campora, J. P., Cooper, S. F., Delaney, R. D., Dreiling, J. M., Estey, B., Figgatt, C., Hall, A., et al. (2026) · Nature · doi:10.1038/s41586-026-10676-4 · Cited by 16 · see citing works
- Authors
- Decaroli, C., Matt, R., Oswald, R., Axline, C., Ernzer, M., Flannery, J., Ragg, S., & Home, J. P.
- Affiliations
- ETH Zurich (CH)
- Corresponding author
- Decaroli, Chiara
- Venue
- Quantum Science and Technology
- Publisher
- IOP Publishing
- Published
- 2021-07-07
- Volume
- 6
- Issue
- 4
- Pages
- 044001
- ISSN
- 2058-9565 (ISSN-L)
- OpenAlex
- W3171647381
- Cited by
- 22
- References
- 5
- Citations by year
- 2026: 5 · 2025: 2 · 2024: 3 · 2023: 7 · 2022: 5
- FWCI
- 1.33
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Quantum Science and Technology (publishedVersion, cc-by)
- Repository for Publications and Research Data (ETH Zurich) (submittedVersion, cc-by)
- ETH Zürich Research Collection (cc-by)
- Funders
- Swiss National Fund (200020_165555 and 200020_179147)
- AQTION Quantum Flagship (820495)
- Intelligence Advanced Research Projects Activity (W911NF-16-1-0070)
- Topics
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Cold Atom Physics and Bose-Einstein Condensates
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Computing Algorithms and Architecture
- Keywords
- Paul trap, X-junctions, potential well, time-dependent potential, heating rate
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