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| Author |
Ларионов, П.А.; Рябчун, С.А.; Финкель, М.И.; Гольцман, Г.Н. |
| Title |
Вывешенный сверхпроводящий детектор терагерцового диапазона |
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Journal Article |
| Year |
2011 |
Publication |
Труды Московского физико-технического института |
Abbreviated Journal |
Труды МФТИ |
| Volume |
3 |
Issue |
2 |
Pages |
29-30 |
| Keywords |
вывешенный болометр, терагерцовый диапазон, сверхпроводящие пленки |
| Abstract |
Рассматриваются технологические особенности создания чувствительного вывешен- ного детектора терагерцевого диапазона на основе плёнки MoRe. Предлагается воз- можный маршрут создания такого детектора и поясняется выбор материалов, ис- пользуемых для создания детектора. |
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RPLAB @ gujma @ |
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645 |
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Масленникова, А. В.; Рябчун, С. А.; Финкель, М. И.; Каурова, Н. С.; Исупова, А. А.; Воронов, Б. М.; Гольцман, Г. Н. |
| Title |
Широкополосные смесители на горячих электронах на основе NbN наноструктур |
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Journal Article |
| Year |
2011 |
Publication |
Труды Московского физико-технического института |
Abbreviated Journal |
Труды МФТИ |
| Volume |
3 |
Issue |
2 |
Pages |
31-34 |
| Keywords |
HEB mixer |
| Abstract |
Мы приводим данные исследования полосы преобразования смесителей на горячих электронах (hot-electron bolometer, НЕВ), изготовленных на основе тонких пленок NbN. Зависимость полосы преобразования от длины смесительного элемента находится в прекрасном согласии с результатами теоретической модели HEB-смесителя, в котором энергетическая релаксация электронов одновременно происходит по двум каналам: фононному и диффузионному. |
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RPLAB @ gujma @ |
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646 |
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Marsili, Francesco; Najafi, Faraz; Herder, Charles; Berggren, Karl K. |
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Electrothermal simulation of superconducting nanowire avalanche photodetectors |
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Journal Article |
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2011 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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98 |
Issue |
9 |
Pages |
3 |
| Keywords |
SNAP |
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We developed an electrothermal model of NbN superconducting nanowire avalanche photodetectors (SNAPs) on sapphire substrates. SNAPs are single-photon detectors consisting of the parallel connection of N superconducting nanowires. We extrapolated the physical constants of the model from experimental data and we simulated the time evolution of the device resistance, temperature and current by solving two coupled electrical and thermal differential equations describing the nanowires. The predictions of the model were in good quantitative agreement with the experimental results. |
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RPLAB @ gujma @ |
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658 |
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Marsili, Francesco; Najafi, Faraz; Dauler, Eric; Bellei, Francesco; Hu, Xiaolong; Csete, Maria; Molnar, Richard J.; Berggren, Karl K. |
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Single-photon detectors based on ultranarrow superconducting nanowires |
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Journal Article |
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2011 |
Publication |
Nano Letters |
Abbreviated Journal |
Nano Lett. |
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11 |
Issue |
5 |
Pages |
2048–2053 |
| Keywords |
SNSPD |
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We report efficient single-photon detection (η = 20% at 1550 nm wavelength) with ultranarrow (20 and 30 nm wide) superconducting nanowires, which were shown to be more robust to constrictions and more responsive to 1550 nm wavelength photons than standard superconducting nanowire single-photon detectors, based on 90 nm wide nanowires. We also improved our understanding of the physics of superconducting nanowire avalanche photodetectors, which we used to increase the signal-to-noise ratio of ultranarrow-nanowire detectors by a factor of 4, thus relaxing the requirements on the read-out circuitry and making the devices suitable for a broader range of applications. |
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RPLAB @ gujma @ |
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659 |
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Pernice, W.; Schuck, C.; Li, M.; Goltsman, G. N.; Sergienko, A. V.; Tang, H. X. |
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High speed travelling wave single-photon detectors with near-unity quantum efficiency |
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Journal Article |
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2011 |
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arXiv |
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arXiv |
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1-14 |
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SPD |
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Ultrafast, high quantum efficiency single photon detectors are among the most sought-after elements in modern quantum optics and quantum communication. Close-to-unity photon detection efficiency is essential for scalable measurement-based quantum computation, quantum key distribution, and loophole-free Bell experiments. However, imperfect modal matching and finite photon absorption rates have usually limited the maximum attainable detection efficiency of single photon detectors. Here we demonstrate a superconducting nanowire detector atop nanophotonic waveguides and achieve single photon detection efficiency up to 94% at telecom wavelengths. Our detectors are fully embedded in a scalable, low loss silicon photonic circuit and provide ultrashort timing jitter of 18ps at multi-GHz detection rates. Exploiting this high temporal resolution we demonstrate ballistic photon transport in silicon ring resonators. The direct implementation of such a detector with high quantum efficiency, high detection speed and low jitter time on chip overcomes a major barrier in integrated quantum photonics. |
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arXiv:1108.5299 |
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RPLAB @ gujma @ |
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