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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2025
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| Online Access: | https://arxiv.org/abs/2512.11794 |
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| _version_ | 1866911316129611776 |
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| author | Hahn, Lewis Kotibhaskar, Nikhil Lefebvre, Fabien Patil, Sakshee Motlakunta, Sainath Sabooni, Mahmood Islam, Rajibul |
| author_facet | Hahn, Lewis Kotibhaskar, Nikhil Lefebvre, Fabien Patil, Sakshee Motlakunta, Sainath Sabooni, Mahmood Islam, Rajibul |
| contents | We present a room-temperature Extreme High Vacuum (XHV) system engineered to support the long-duration operation of a trapped-ion quantum processor. Background-gas collisions impose limitations on trapped-ion performance and scalability by interrupting algorithmic execution and, in some cases, ejecting ions from the trap. Using molecular-flow simulations, we optimize the chamber geometry, conductance pathways, and pumping configuration to maximize the effective pumping speed at the ion location. We perform high-temperature heat treatment of stainless steel vacuum components to achieve the desired outgassing rate, guided by quantitative relations of bulk diffusive processes, allowing us to reduce the \(\mathrm{H_2}\) outgassing load to the \(10^{-15}\,\mathrm{mbar\,l\,s^{-1}\,cm^{-2}}\) level. The final pressure in our chamber, measured by a hot cathode gauge, is \(1.5\times10^{-12}\,\mathrm{mbar}\), corresponding to the gauge's measurement limit. We measure the local pressure at the ion location by observing collision-induced reordering events in a long ion chain of mixed-isotope Yb\(^+\). From the observed reordering frequency, we extract the average interval between collisions to be \((1.9 \pm 0.1)\,\mathrm{hrs/ion}\). This corresponds to a local pressure of \((3.9 \pm 0.3)\times10^{-12}\,\mathrm{mbar}\) at the ion location, assuming that all collisions arise from background H\(_2\) molecules at room temperature. Our demonstration extends the continuous operation time of a quantum processor while maintaining the simplicity of a room-temperature system that does not require cryogenic apparatus. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_11794 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Room-Temperature Extreme High Vacuum System for Trapped-Ion Quantum Information Processing Hahn, Lewis Kotibhaskar, Nikhil Lefebvre, Fabien Patil, Sakshee Motlakunta, Sainath Sabooni, Mahmood Islam, Rajibul Quantum Physics We present a room-temperature Extreme High Vacuum (XHV) system engineered to support the long-duration operation of a trapped-ion quantum processor. Background-gas collisions impose limitations on trapped-ion performance and scalability by interrupting algorithmic execution and, in some cases, ejecting ions from the trap. Using molecular-flow simulations, we optimize the chamber geometry, conductance pathways, and pumping configuration to maximize the effective pumping speed at the ion location. We perform high-temperature heat treatment of stainless steel vacuum components to achieve the desired outgassing rate, guided by quantitative relations of bulk diffusive processes, allowing us to reduce the \(\mathrm{H_2}\) outgassing load to the \(10^{-15}\,\mathrm{mbar\,l\,s^{-1}\,cm^{-2}}\) level. The final pressure in our chamber, measured by a hot cathode gauge, is \(1.5\times10^{-12}\,\mathrm{mbar}\), corresponding to the gauge's measurement limit. We measure the local pressure at the ion location by observing collision-induced reordering events in a long ion chain of mixed-isotope Yb\(^+\). From the observed reordering frequency, we extract the average interval between collisions to be \((1.9 \pm 0.1)\,\mathrm{hrs/ion}\). This corresponds to a local pressure of \((3.9 \pm 0.3)\times10^{-12}\,\mathrm{mbar}\) at the ion location, assuming that all collisions arise from background H\(_2\) molecules at room temperature. Our demonstration extends the continuous operation time of a quantum processor while maintaining the simplicity of a room-temperature system that does not require cryogenic apparatus. |
| title | A Room-Temperature Extreme High Vacuum System for Trapped-Ion Quantum Information Processing |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2512.11794 |