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Maingault, L.; Tarkhov, M.; Florya, I.; Semenov, A.; Espiau de Lamaëstre, R.; Cavalier, P.; Gol’tsman, G.; Poizat, J.-P.; Villégier, J.-C. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Spectral dependency of superconducting single photon detectors |
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2010 |
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J. Appl. Phys. |
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J. Appl. Phys. |
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107 |
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11 |
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116103 (1 to 3) |
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NbN SSPD, SNSPD |
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We investigate the effect of varying both incoming optical wavelength and width of NbN nanowires on the superconducting single photon detectors (SSPD) detection efficiency. The SSPD are current biased close to critical value and temperature fixed at 4.2 K, far from transition. The experimental results are found to verify with a good accuracy predictions based on the “hot spot model,” whose size scales with the absorbed photon energy. With larger optical power inducing multiphoton detection regime, the same scaling law remains valid, up to the three-photon regime. We demonstrate the validity of applying a limited number of measurements and using such a simple model to reasonably predict any SSPD behavior among a collection of nanowire device widths at different photon wavelengths. These results set the basis for designing efficient single photon detectors operating in the infrared (2–5 μm range).
This work was supported by European projects FP6 STREP “SINPHONIA” (Contract No. NMP4-CT-2005-16433) and IP “QAP” (Contract No. 15848). |
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0021-8979 |
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1392 |
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Zinoni, C.; Alloing, B.; Li, L. H.; Marsili, F.; Fiore, A.; Lunghi, L.; Gerardino, A.; Vakhtomin, Y. B.; Smirnov, K. V.; Gol’tsman, G. N. |
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Erratum: “Single photon experiments at telecom wavelengths using nanowire superconducting detectors” [Appl. Phys. Lett. 91, 031106 (2007)] |
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2010 |
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Appl. Phys. Lett. |
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Appl. Phys. Lett. |
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96 |
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8 |
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089901 |
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Keywords |
SSPD, SNSPD, erratum |
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A calculation error was made in the original publication of this letter. The error was in the calculation of the noise equivalent power (NEP) values for the avalanche photodiode detector (APD) and the superconducting single photon detector (SSPD), the incorrect values were plotted on the right axis in Fig. 1(b). The correct NEP values were calculated with the same equation reported in the original letter and the revised Fig. 1(b) is shown below. The other conclusions of the paper remain unaltered. |
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0003-6951 |
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1395 |
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Манова, Н.Н.; Корнеева, Ю.П.; Корнеев, А.А.; Слыш, В.; Воронов, Б.М.; Гольцман, Г.Н. |
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Сверхпроводниковый NbN однофотонный детектор, интегрированный с четвертьволновым резонатором |
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2011 |
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Письма в Журнал технической физики |
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ПЖТФ |
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37 |
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10 |
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7 |
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SSPD |
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Исследована спектральная зависимость квантовой эффективности сверхпроводниковых NbN однофотонных детекторов, интегрированных с оптическими четвертьволновыми резонаторами с использованием диэлектриков Si3N4, SiO2, SiO. |
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RPLAB @ gujma @ |
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637 |
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Korneeva, Y.; Florya, I.; Semenov, A.; Korneev, A.; Goltsman, G. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
New generation of nanowire NbN superconducting single-photon detector for mid-infrared |
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2011 |
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IEEE Trans. Appl. Supercond. |
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IEEE Trans. Appl. Supercond. |
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21 |
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3 |
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323-326 |
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SSPD |
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We present a break-through approach to mid-infrared single-photon detection based on nanowire NbN superconducting single-photon detectors (SSPD). Although SSPD became a mature technology for telecom wavelengths (1.3-1.55 μm) its further expansion to mid-infrared wavelength was hampered by low sensitivity above 2 μm. We managed to overcome this limit by reducing the nanowire width to 50 nm, while retaining high superconducting properties and connecting the wires in parallel to produce a voltage response of sufficient magnitude. The new device exhibits 10 times better quantum efficiency at 3.5 μm wavelength than the “standard” SSPD. |
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RPLAB @ gujma @ |
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644 |
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Baek, Burm; Lita, Adriana E.; Verma, Varun; Nam, Sae Woo |
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Superconducting a-WxSi1–x nanowire single-photon detector with saturated internal quantum efficiency from visible to 1850 nm |
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2011 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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Volume |
98 |
Issue |
25 |
Pages |
3 |
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Keywords |
SNSPD |
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We have developed a single-photon detector based on superconducting amorphous tungsten–silicon alloy (a-WxSi1–x) nanowire. Our device made from a uniform a-WxSi1–x nanowire covers a practical detection area (16 μm×16 μm) and shows high sensitivity featuring a plateau of the internal quantum efficiencies, i.e., efficiencies of generating an electrical pulse per absorbed photon, over a broad wavelength and bias range. This material system for superconducting nanowire detector technology could overcome the limitations of the prevalent nanowire devices based on NbN and lead to more practical, ideal single-photon detectors having high efficiency, low noise, and high count rates. |
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RPLAB @ gujma @ |
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665 |
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