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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2511.17470 |
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| _version_ | 1866915631192866816 |
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| author | Basset, Julien Stanisavljević, Ognjen Gabelli, Julien Aprili, Marco Estève, Jérôme |
| author_facet | Basset, Julien Stanisavljević, Ognjen Gabelli, Julien Aprili, Marco Estève, Jérôme |
| contents | We demonstrate a single-photon detector operating in the microwave domain, based on photo-assisted quasiparticle tunneling events that poison a superconducting island. The detection relies on continuously monitoring the island's charge parity using microwave reflectometry. This scheme achieves 10% detection efficiency with sub 50 ns time resolution and short dead time 1 microsecond, for microwave photons at 10 GHz. The detector features three junctions connected to a superconducting island, which together carry out photoelectric conversion and charge readout. The enhanced light-matter coupling, crucial to photon to quasiparticle conversion, is provided by a granular aluminum-based high-impedance microwave resonator. The time resolved detection of itinerant microwave photon opens up new perspectives in quantum sensing, microwave quantum optics, readout of superconducting qubits and mesoscopic physics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_17470 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Fast and Continuous Detection of Single Microwave Photons via Photo-assisted Quasiparticle Tunneling to a Superconducting Island Basset, Julien Stanisavljević, Ognjen Gabelli, Julien Aprili, Marco Estève, Jérôme Mesoscale and Nanoscale Physics We demonstrate a single-photon detector operating in the microwave domain, based on photo-assisted quasiparticle tunneling events that poison a superconducting island. The detection relies on continuously monitoring the island's charge parity using microwave reflectometry. This scheme achieves 10% detection efficiency with sub 50 ns time resolution and short dead time 1 microsecond, for microwave photons at 10 GHz. The detector features three junctions connected to a superconducting island, which together carry out photoelectric conversion and charge readout. The enhanced light-matter coupling, crucial to photon to quasiparticle conversion, is provided by a granular aluminum-based high-impedance microwave resonator. The time resolved detection of itinerant microwave photon opens up new perspectives in quantum sensing, microwave quantum optics, readout of superconducting qubits and mesoscopic physics. |
| title | Fast and Continuous Detection of Single Microwave Photons via Photo-assisted Quasiparticle Tunneling to a Superconducting Island |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2511.17470 |