Monolithic Segmented 3D Ion Trap for Quantum Technology Applications

Quantum Physics [Submitted on 17 Mar 2026] Monolithic Segmented 3D Ion Trap for Quantum Technology Applications Abhishek Menon, Michael Strauss, George Tomaras, Liam Jeanette, April X. Sheffield, Devon Valdez, Yuanheng Xie, Visal So, Henry De Luo, Midhuna Duraisamy Suganthi, Mark Dugan, Philippe Bado, Norbert M. Linke, Guido Pagano, Roman Zhuravel Monolithic three-dimensional (3D) Paul traps combine the high-precision microfabrication of two-dimensional (2D) chip traps with the deep trapping potentials and low heating rates characteristic of macroscopic Paul traps, which are typically manually assembled. However, achieving low motional heating rates and optical access with a high numerical aperture (NA) while maintaining the high radio-frequency (RF) voltages required for heavy ionic species, such as Yb^{+} and Ba^{+}, remains a significant technical challenge. In this work, we present a segmented, monolithic 3D fused silica blade trap, featuring an ion-electrode distance of 250 \mum with stable operation at high RF voltages. We benchmark the performance of the trap using Yb^{+} ions, demonstrating axially homogeneous trapping potentials for 200 \mum around the axial center of the trap, high multi-directional optical access (up to 0.7 NA), and radial motional heating rate as low as 1.1 \pm 0.1 quanta/s at radial trap frequencies about 3 MHz near room temperature. Furthermore, we observe a motional Ramsey coherence time, T_{2}, of around 95 ms for the radial center-of-mass mode. We demonstrate a two-qubit gate fidelity of {99.3}^{+ 0.7}_{- 1.5}\% with state preparation and measurement correction. These results establish fused-silica monolithic blade traps as a scalable, modular platform for quantum simulation, computation, metrology, and networking with heavy ionic species. Subjects: Quantum Physics (quant-ph); Atomic Physics (physics.atom-ph) Cite as: arXiv:2603.16048 [quant-ph]   (or arXiv:2603.16048v1 [quant-ph] for this version)   https://doi.org/10.48550/arXiv.2603.16048 Focus to learn more Submission history From: Abhishek Menon [view email] [v1] Tue, 17 Mar 2026 01:24:14 UTC (7,848 KB) Access Paper: view license Current browse context: quant-ph < prev   |   next > new | recent | 2026-03 Change to browse by: physics physics.atom-ph References & Citations INSPIRE HEP NASA ADS Google Scholar Semantic Scholar Export BibTeX Citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Demos Related Papers About arXivLabs Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)