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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2605.05452 |
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| _version_ | 1866914536592769024 |
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| author | Ashworth, Patrick Barry, Peter S. Benson, Chris S. Gordon-Moys, Harry Morris, Izaak |
| author_facet | Ashworth, Patrick Barry, Peter S. Benson, Chris S. Gordon-Moys, Harry Morris, Izaak |
| contents | This work focuses on the development and demonstration of tunable superconducting on-chip resonator, leveraging the intrinsic current-dependent non-linear kinetic inductance of superconducting aluminium, and investigating the effect of oxygen content. Thin films are deposited using standard metal evaporation. We present results from a comprehensive study based on a series of evaporated Al thin films. This research aims to inform and constrain optimisation strategies for the design of mm-wave on-chip spectrometers, particularly regarding yield, resolution, and efficiency. By systematically varying film stoichiometry, we use a series of DC measurements to extract fundamental film properties such as resistivity, critical current and critical temperature. Furthermore, we employ low-loss DC-coupled microwave resonators to characterise both their microwave properties and the non-linear kinetic inductance, comparing these findings to a determined non-linear kinetic model. Finally, we discuss the possibility of usage in a parametric amplifier. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_05452 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | On-Chip Resonator for Nonlinear Kinetic Inductance Characterisation and Future Spectrometry Applications Ashworth, Patrick Barry, Peter S. Benson, Chris S. Gordon-Moys, Harry Morris, Izaak Instrumentation and Methods for Astrophysics This work focuses on the development and demonstration of tunable superconducting on-chip resonator, leveraging the intrinsic current-dependent non-linear kinetic inductance of superconducting aluminium, and investigating the effect of oxygen content. Thin films are deposited using standard metal evaporation. We present results from a comprehensive study based on a series of evaporated Al thin films. This research aims to inform and constrain optimisation strategies for the design of mm-wave on-chip spectrometers, particularly regarding yield, resolution, and efficiency. By systematically varying film stoichiometry, we use a series of DC measurements to extract fundamental film properties such as resistivity, critical current and critical temperature. Furthermore, we employ low-loss DC-coupled microwave resonators to characterise both their microwave properties and the non-linear kinetic inductance, comparing these findings to a determined non-linear kinetic model. Finally, we discuss the possibility of usage in a parametric amplifier. |
| title | On-Chip Resonator for Nonlinear Kinetic Inductance Characterisation and Future Spectrometry Applications |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2605.05452 |