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Author |
Zolotov, P.; Divochiy, A.; Korneeva, Yu.; Vakhtomin, Yu.; Seleznev, V.; Smirnov, K. |
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Capability investigation of superconducting single-photon detectors, optimized for 800–1200 nm spectrum range |
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Miscellaneous |
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Year |
2015 |
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3th ICQT |
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3th ICQT |
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SSPD, SNSPD |
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Hotel Ukraina (Radisson), Moscow |
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1253 |
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Zolotov, P.; Vakhtomin, Yu.; Divochiy, A.; Morozov, P.; Seleznev, V.; Smirnov, K |
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Title |
Development of fast and high-effective single-photon detector for spectrum range up to 2.3 μm |
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Conference Article |
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Year |
2017 |
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Proc. SPBOPEN |
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Proc. SPBOPEN |
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439-440 |
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SSPD, SNSPD |
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We present the results of development and testing of the single-photon-counting system operating in the wide spectrum rane up to 2.3 mcm. We managed to increase system detection efficiency up to 60% in the range of 1.7-2.3 mcm optimisation of the fabrication methods of superconducting single-photon detectors and application of the single-mode fiber with enlarged core diameter. |
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St. Petersburg, Russia |
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1255 |
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Kovalyuk, V.; Ferrari, S.; Kahl, O.; Semenov, A.; Lobanov, Yu; Shcherbatenko, M.; Korneev, A; Pernice, W.; Goltsman, G. |
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Title |
Waveguide integrated superconducting single-photon detector for on-chip quantum and spectral photonic application |
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Conference Volume |
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Year |
2017 |
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Proc. SPBOPEN |
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Proc. SPBOPEN |
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421-422 |
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waveguide, SSPD, SNSPD |
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By adopting a travelling-wave geometry approach, integrated superconductor- nanophotonic devices were fabricated. The architecture consists of a superconducting NbN- nanowire atop of a silicon nitride (Si 3 N 4 ) nanophotonic waveguide. NbN-nanowire was operated as a single-photon counting detector, with up to 92% on-chip detection efficiency (OCDE), in the coherent mode, serving as a highly sensitive IR heterodyne mixer with spectral resolution (f/df) greater than 10^6 in C-band at 1550 nm wavelength. |
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St. Petersburg, Russia |
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Duplicated as 1140 |
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1256 |
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Goltsman, G. |
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Quantum-photonic integrated circuits |
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Conference Article |
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2019 |
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Proc. IWQO |
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Proc. IWQO |
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22-23 |
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WSSPD, waveguide SSPD, SNSPD, quantum optics, integrated optics, superconducting nanowire single-photon detector |
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We show the design, a history of development as well as the most successful and promising approaches for QPICs realization based on hybrid nanophotonic-superconducting devices, where one of the key elements of such a circuit is a waveguide integrated superconducting single-photon detector (WSSPD). The potential of integration with fluorescent molecules is discussed also. |
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1287 |
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Author |
Sych, Denis; Shcherbatenko, Michael; Elezov, Michael; Goltsman, Gregory N. |
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Title |
Towards the improvement of the heterodyne receiver sensitivity beyond the quantum noise limit |
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Conference Article |
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2018 |
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Proc. 29th Int. Symp. Space Terahertz Technol. |
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Proc. 29th Int. Symp. Space Terahertz Technol. |
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245-247 |
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standard quantum limit, sub-SQL quantum receiver, Kennedy receiver, SSPD, SNSPD |
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Noise reduction in heterodyne receivers of the terahertz range is an important issue for astronomical applications. Quantum fluctuations, also known as shot noise, prohibit errorless measurements of the amplitude of electro-magnetic waves, and introduce the so-called standard quantum limit (SQL) on the minimum error of the heterodyne measurements. Nowadays, the sensitivity of modern heterodyne receivers approaches the SQL, and the growing demand for the improvement of measurement precision stimulates a number of both theoretical and experimental efforts to design novel measurement techniques aimed at overcoming the SQL. Here we demonstrate the first steps towards the practical implementation of a sub-SQL quantum receiver. As the principal resources, it requires a highly efficient single-photon counting detector and an interferometer-based scheme for mixing the signal with a low-power local oscillator. We describe the idea of such receiver and its main components. |
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1314 |
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