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Gol’tsman, G. N.; Smirnov, K.; Kouminov, P.; Voronov, B.; Kaurova, N.; Drakinsky, V.; Zhang, J.; Verevkin, A.; Sobolewski, R. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Fabrication of nanostructured superconducting single-photon detectors |
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Journal Article |
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Year |
2003 |
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IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
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13 |
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2 |
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192-195 |
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NbN SSPD, SNSPD |
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Fabrication of NbN superconducting single-photon detectors, based on the hotspot effect is presented. The hotspot formation arises in an ultrathin and submicrometer-width superconductor stripe and, together with the supercurrent redistribution, leads to the resistive detector response upon absorption of a photon. The detector has a meander structure to maximally increase its active area and reach the highest detection efficiency. Main processing steps, leading to efficient devices, sensitive in 0.4-5 /spl mu/m wavelength range, are presented. The impact of various processing steps on the performance and operational parameters of our detectors is discussed. |
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1558-2515 |
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1515 |
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Zhang, J.; Słysz, W.; Pearlman, A.; Verevkin, A.; Sobolewski, R.; Okunev, O.; Chulkova, G.; Gol’tsman, G. N. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Time delay of resistive-state formation in superconducting stripes excited by single optical photons |
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Journal Article |
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Year |
2003 |
Publication |
Phys. Rev. B |
Abbreviated Journal |
Phys. Rev. B |
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67 |
Issue |
13 |
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132508 (1 to 4) |
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NbN SSPD, SNSPD |
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We have observed a 65(±5)-ps time delay in the onset of a resistive-state formation in 10-nm-thick, 130-nm-wide NbN superconducting stripes exposed to single photons. The delay in the photoresponse decreased to zero when the stripe was irradiated by multi-photon (classical) optical pulses. Our NbN structures were kept at 4.2 K, well below the material’s critical temperature, and were illuminated by 100-fs-wide optical pulses. The time-delay phenomenon has been explained within the framework of a model based on photon-induced generation of a hotspot in the superconducting stripe and subsequent, supercurrent-assisted, resistive-state formation across the entire stripe cross section. The measured time delays in both the single-photon and two-photon detection regimes agree well with theoretical predictions of the resistive-state dynamics in one-dimensional superconducting stripes. |
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0163-1829 |
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1519 |
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Verevkin, A.; Xu, Y.; Zheng, X.; Williams, C.; Sobolewski, Roman; Okunev, O.; Smirnov, K.; Chulkova, G.; Korneev, A.; Lipatov, A.; Gol’tsman, G. N. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Superconducting NbN-based ultrafast hot-electron single-photon detector for infrared range |
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Conference Article |
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2001 |
Publication |
Proc. 12th Int. Symp. Space Terahertz Technol. |
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Proc. 12th Int. Symp. Space Terahertz Technol. |
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462-468 |
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NbN SSPD, SNSPD |
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1539 |
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Gol’tsman, G. N.; Smirnov, K. V. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Electron-phonon interaction in a two-dimensional electron gas of semiconductor heterostructures at low temperatures |
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Journal Article |
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2001 |
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Jetp Lett. |
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Jetp Lett. |
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74 |
Issue |
9 |
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474-479 |
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2DEG, AlGaAs/GaAs heterostructures |
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Theoretical and experimental works devoted to studying electron-phonon interaction in the two-dimensional electron gas of semiconductor heterostructures at low temperatures in the case of strong heating in an electric field under quasi-equilibrium conditions and in a quantizing magnetic field perpendicular to the 2D layer are considered. |
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0021-3640 |
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По итогам проектов российского фонда фундаментальных исследований. Проект РФФИ # 98-02-16897 Электрон-фононное взаимодействие в двумерном электронном газе полупроводниковых гетероструктур при низких температурах |
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1541 |
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Author |
Somani, S.; Kasapi, S.; Wilsher, K.; Lo, W.; Sobolewski, R.; Gol’tsman, G. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
New photon detector for device analysis: Superconducting single-photon detector based on a hot electron effect |
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Journal Article |
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Year |
2001 |
Publication |
J. Vac. Sci. Technol. B |
Abbreviated Journal |
J. Vac. Sci. Technol. B |
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19 |
Issue |
6 |
Pages |
2766-2769 |
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Keywords |
NbN SSPD, SNSPD |
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Abstract |
A novel superconducting single-photon detector (SSPD), intrinsically capable of high quantum efficiency (up to 20%) over a wide spectral range (ultraviolet to infrared), with low dark counts (<1 cps), and fast (<40 ps) timing resolution, is described. This SSPD has been used to perform timing measurements on complementary metal–oxide–semiconductor integrated circuits (ICs) by detecting the infrared light emission from switching transistors. Measurements performed from the backside of a 0.13 μm geometry flip–chip IC are presented. Other potential applications for this detector are in telecommunications, quantum cryptography, biofluorescence, and chemical kinetics. |
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0734211X |
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1542 |
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