Mid-infrared characterization of NbTiN superconducting nanowire single-photon detectors on silicon-on-insulator
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866914933835300864 |
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| author | Azem, Adan Morozov, Dmitry V. Kuznesof, Daniel Bruscino, Ciro Hadfield, Robert H. Chrostowski, Lukas Young, Jeff F. |
| author_facet | Azem, Adan Morozov, Dmitry V. Kuznesof, Daniel Bruscino, Ciro Hadfield, Robert H. Chrostowski, Lukas Young, Jeff F. |
| contents | Superconducting nanowire single-photon detectors are widely used for detecting individual photons across various wavelengths from ultraviolet to near-infrared range. Recently, there has been increasing interest in enhancing their sensitivity to single photons in the mid-infrared spectrum, driven by applications in quantum communication, spectroscopy and astrophysics. Here, we present our efforts to expand the spectral detection capabilities of U-shaped NbTiN-based superconducting nanowire single-photon detectors, fabricated in a 2-wire configuration on a silicon-on-insulator substrate, into the mid-infrared range. We demonstrate saturated internal detection efficiency extending up to a wavelength of 3.5 μm for a 5 nm thick and 50 nm wide NbTiN nanowire with a dark count rate less than 10 counts per second at 0.9 K and a rapid recovery time of 4.3 ns. The detectors are engineered for integration on waveguides in a silicon-on-insulator platform for compact, multi-channel device applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_15959 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Mid-infrared characterization of NbTiN superconducting nanowire single-photon detectors on silicon-on-insulator Azem, Adan Morozov, Dmitry V. Kuznesof, Daniel Bruscino, Ciro Hadfield, Robert H. Chrostowski, Lukas Young, Jeff F. Quantum Physics Superconductivity Instrumentation and Detectors Superconducting nanowire single-photon detectors are widely used for detecting individual photons across various wavelengths from ultraviolet to near-infrared range. Recently, there has been increasing interest in enhancing their sensitivity to single photons in the mid-infrared spectrum, driven by applications in quantum communication, spectroscopy and astrophysics. Here, we present our efforts to expand the spectral detection capabilities of U-shaped NbTiN-based superconducting nanowire single-photon detectors, fabricated in a 2-wire configuration on a silicon-on-insulator substrate, into the mid-infrared range. We demonstrate saturated internal detection efficiency extending up to a wavelength of 3.5 μm for a 5 nm thick and 50 nm wide NbTiN nanowire with a dark count rate less than 10 counts per second at 0.9 K and a rapid recovery time of 4.3 ns. The detectors are engineered for integration on waveguides in a silicon-on-insulator platform for compact, multi-channel device applications. |
| title | Mid-infrared characterization of NbTiN superconducting nanowire single-photon detectors on silicon-on-insulator |
| topic | Quantum Physics Superconductivity Instrumentation and Detectors |
| url | https://arxiv.org/abs/2408.15959 |