Quasiparticle Dynamics in NbN Superconducting Microwave Resonators at Single Photon Regime
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arXiv
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| Autori principali: | , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866915354716930048 |
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| author | Foshat, Paniz Poorgholam-khanjari, Shima Seferai, Valentino Feng, Hua Johny, Susan Mukhanov, Oleg A. Hutchings, Matthew Hadfield, Robert H. Weides, Martin Delfanazari, Kaveh |
| author_facet | Foshat, Paniz Poorgholam-khanjari, Shima Seferai, Valentino Feng, Hua Johny, Susan Mukhanov, Oleg A. Hutchings, Matthew Hadfield, Robert H. Weides, Martin Delfanazari, Kaveh |
| contents | Exchanging energy below the superconducting gap introduces quasiparticle energy distributions in superconducting quantum circuits, which will be responsible for their decoherence. This study examines the impact of quasiparticle energy on the performance of NbN superconducting microwave coplanar waveguide resonators on silicon chips. We measured the resonance frequency and internal quality factor in response to temperature sweeps to evaluate the effect of quasiparticle dynamics. Moreover, by calculating the complex conductivity of the NbN film, we identified the contribution of quasiparticle density to the experimental results. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_17816 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quasiparticle Dynamics in NbN Superconducting Microwave Resonators at Single Photon Regime Foshat, Paniz Poorgholam-khanjari, Shima Seferai, Valentino Feng, Hua Johny, Susan Mukhanov, Oleg A. Hutchings, Matthew Hadfield, Robert H. Weides, Martin Delfanazari, Kaveh Quantum Physics Superconductivity Systems and Control Applied Physics Exchanging energy below the superconducting gap introduces quasiparticle energy distributions in superconducting quantum circuits, which will be responsible for their decoherence. This study examines the impact of quasiparticle energy on the performance of NbN superconducting microwave coplanar waveguide resonators on silicon chips. We measured the resonance frequency and internal quality factor in response to temperature sweeps to evaluate the effect of quasiparticle dynamics. Moreover, by calculating the complex conductivity of the NbN film, we identified the contribution of quasiparticle density to the experimental results. |
| title | Quasiparticle Dynamics in NbN Superconducting Microwave Resonators at Single Photon Regime |
| topic | Quantum Physics Superconductivity Systems and Control Applied Physics |
| url | https://arxiv.org/abs/2506.17816 |