Enhancing the sensitivity of single microwave photon detection with bandwidth tunability
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917437896654848 |
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| author | Pallegoix, Louis Travesedo, Jaime May, Alexandre S. Balembois, Léo Vion, Denis Bertet, Patrice Flurin, Emmanuel |
| author_facet | Pallegoix, Louis Travesedo, Jaime May, Alexandre S. Balembois, Léo Vion, Denis Bertet, Patrice Flurin, Emmanuel |
| contents | We report on the characteristics of a microwave photon counter device based on a superconducting transmon qubit. Its design is similar to [arXiv:2307.03614], with an additional bandwidth tuning circuit that allows optimizing the device efficiency and noise. Owing to this new feature and to improvements in device fabrication, a power sensitivity of $3 \cdot 10^{-23} \mathrm{W}/\sqrt{\mathrm{Hz}}$ is reached. We confirm the high performance of the device by measuring single spin microwave fluorescence. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_07354 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Enhancing the sensitivity of single microwave photon detection with bandwidth tunability Pallegoix, Louis Travesedo, Jaime May, Alexandre S. Balembois, Léo Vion, Denis Bertet, Patrice Flurin, Emmanuel Quantum Physics We report on the characteristics of a microwave photon counter device based on a superconducting transmon qubit. Its design is similar to [arXiv:2307.03614], with an additional bandwidth tuning circuit that allows optimizing the device efficiency and noise. Owing to this new feature and to improvements in device fabrication, a power sensitivity of $3 \cdot 10^{-23} \mathrm{W}/\sqrt{\mathrm{Hz}}$ is reached. We confirm the high performance of the device by measuring single spin microwave fluorescence. |
| title | Enhancing the sensitivity of single microwave photon detection with bandwidth tunability |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2501.07354 |