Experimental investigation of the detection mechanism in WSi nanowire superconducting single photon detectors
We use quantum detector tomography to investigate the detection mechanism in WSi nanowire superconducting single photon detectors (SSPDs). To this purpose, we fabricated a 250nm wide and 250nm long WSi nanowire and measured its response to impinging photons with wavelengths ranging from \(\lambda\)...
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| creator | Gaudio, Rosalinda Renema, Jelmer J Zhou, Zili Verma, Varun B Lita, Adriana E Shainline, Jeffrey Stevens, Martin J Mirin, Richard P Sae Woo Nam van Exter, Martin P Michiel J A de Dood Fiore, Andrea |
| description | We use quantum detector tomography to investigate the detection mechanism in WSi nanowire superconducting single photon detectors (SSPDs). To this purpose, we fabricated a 250nm wide and 250nm long WSi nanowire and measured its response to impinging photons with wavelengths ranging from \(\lambda\) = 900 nm to \(\lambda\) = 1650 nm. Tomographic measurements show that the detector response depends on the total excitation energy only. Moreover, for energies Et > 0.8eV the current energy relation is linear, similar to what was observed in NbN nanowires, whereas the current-energy relation deviates from linear behaviour for total energies below 0.8eV. |
| doi_str_mv | 10.48550/arxiv.1602.07659 |
| format | Article |
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To this purpose, we fabricated a 250nm wide and 250nm long WSi nanowire and measured its response to impinging photons with wavelengths ranging from \(\lambda\) = 900 nm to \(\lambda\) = 1650 nm. Tomographic measurements show that the detector response depends on the total excitation energy only. Moreover, for energies Et > 0.8eV the current energy relation is linear, similar to what was observed in NbN nanowires, whereas the current-energy relation deviates from linear behaviour for total energies below 0.8eV.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.1602.07659</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Detectors ; Nanowires ; Niobium nitride ; Photons ; Physics - Mesoscale and Nanoscale Physics ; Physics - Optics ; Physics - Quantum Physics ; Quantum theory ; Superconductivity</subject><ispartof>arXiv.org, 2016-06</ispartof><rights>2016. 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| source | arXiv.org; Open Access: Freely Accessible Journals by multiple vendors |
| subjects | Detectors Nanowires Niobium nitride Photons Physics - Mesoscale and Nanoscale Physics Physics - Optics Physics - Quantum Physics Quantum theory Superconductivity |
| title | Experimental investigation of the detection mechanism in WSi nanowire superconducting single photon detectors |
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