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Ejrnaes, M.; Cristiano, R.; Quaranta, O.; Pagano, S.; Gaggero, A.; Mattioli, F.; Leoni, R.; Voronov, B.; Gol’tsman, G. |
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Title |
A cascade switching superconducting single photon detector |
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Journal Article |
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2007 |
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Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
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91 |
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26 |
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262509 (1 to 3) |
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SSPD, SNSPD, parallel-wire |
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We have realized superconducting single photon detectors with reduced inductance and increased signal pulse amplitude. The detectors are based on a parallel connection of ultrathin NbN nanowires with a common bias inductance. When properly biased, an absorbed photon induces a cascade switch of all the parallel wires generating a signal pulse amplitude of 2mV. The parallel wire configuration lowers the detector inductance and reduces the response time well below 1ns.
This work was performed in the framework of the EU project “SINPHONIA” NMP4-CT-2005-016433. |
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0003-6951 |
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1418 |
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Kovalyuk, V.; Hartmann, W.; Kahl, O.; Kaurova, N.; Korneev, A.; Goltsman, G.; Pernice, W. H. P. |
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Title |
Absorption engineering of NbN nanowires deposited on silicon nitride nanophotonic circuits |
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Journal Article |
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2013 |
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Opt. Express |
Abbreviated Journal |
Opt. Express |
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21 |
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19 |
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22683-22692 |
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SSPD, SNSPD, NbN nanoeires, Si3N4 waveguides |
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We investigate the absorption properties of U-shaped niobium nitride (NbN) nanowires atop nanophotonic circuits. Nanowires as narrow as 20nm are realized in direct contact with Si3N4 waveguides and their absorption properties are extracted through balanced measurements. We perform a full characterization of the absorption coefficient in dependence of length, width and separation of the fabricated nanowires, as well as for waveguides with different cross-section and etch depth. Our results show excellent agreement with finite-element analysis simulations for all considered parameters. The experimental data thus allows for optimizing absorption properties of emerging single-photon detectors co-integrated with telecom wavelength optical circuits. |
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1094-4087 |
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PMID:24104155 |
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1213 |
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Smirnov, E.; Golikov, A.; Zolotov, P.; Kovalyuk, V.; Lobino, M.; Voronov, B.; Korneev, A.; Goltsman, G. |
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Superconducting nanowire single-photon detector on lithium niobate |
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2018 |
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J. Phys.: Conf. Ser. |
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J. Phys.: Conf. Ser. |
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1124 |
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051025 |
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SSPD, SNSPD, lithium niobate, LN |
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We demonstrate superconducting niobium nitride nanowires folded on top of lithium niobate substrate. We report of 6% system detection efficiency at 20 s−1 dark count rate at telecommunication wavelength (1550 nm). Our results shown great potential for the use of NbN nanowires in the field of linear and nonlinear integrated quantum photonics. |
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1742-6588 |
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1194 |
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Elezov, M.; Scherbatenko, M.; Sych, D.; Goltsman, G.; Arakelyan, S.; Evlyukhin, A.; Kalachev, A.; Naumov, A. |
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Towards the fiber-optic Kennedy quantum receiver |
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2019 |
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EPJ Web Conf. |
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EPJ Web Conf. |
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220 |
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03011 (1 to 2) |
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SSPD, SNSPD, Kennedy quantum receiver |
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We consider practical aspects of using standard fiber-optic elements and superconducting nanowire single-photon detectors for the development of a practical quantum receiver based on the Kennedy scheme. Our receiver allows to discriminate two phase-modulated coherent states of light at a wavelength of 1.5 microns in continuous mode with bit rate 200 Kbit/s and error rate about two times below the standard quantum limit. |
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2100-014X |
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1288 |
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Elvira, D.; Michon, A.; Fain, B.; Patriarche, G.; Beaudoin, G.; Robert-Philip, I.; Vachtomin, Y.; Divochiy, A. V.; Smirnov, K. V.; Gol’tsman, G. N.; Sagnes, I.; Beveratos, A. |
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Time-resolved spectroscopy of InAsP/InP(001) quantum dots emitting near 2 μm |
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2010 |
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Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
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97 |
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13 |
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131907 (1 to 3) |
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SSPD, SNSPD, InAsP/InP quantum dots |
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By using superconducting single photon detectors, we perform time-resolved characterization of a small ensemble of InAsP/InP quantum dots grown by metal organic vapor phase epitaxy, emitting at wavelengths between 1.6 and 2.2 μm. We demonstrate that alloying phosphorus with InAs allows to shift the emission wavelength toward higher wavelengths, while keeping the high optical quality of these quantum dots at room temperature, with no decrease in their radiative lifetime. This work was partially supported by Russian Ministry of Science and Education: Federal State Program “Scientific and Educational Cadres of Innovative” state Contract Nos. 02.740.0228, 14.740.11.0343, 14.740.11.0269, and P931, and RFBR Project No. 09-02-12364. |
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0003-6951 |
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1238 |
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