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| Author |
Fedorov, G.; Kardakova, A.; Gayduchenko, I.; Charayev, I.; Voronov, B.M.; Finkel, M.; Klapwijk, T.M.; Morozov, S.; Presniakov, M.; Bobrinetskiy, I.; Ibragimov, R.; Goltsman, G. |
Title  |
Photothermoelectric response in asymmetric carbon nanotube devices exposed to sub-terahertz radiation |
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Journal Article |
| Year |
2013 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
103 |
Issue |
18 |
Pages |
181121 (1 to 5) |
| Keywords |
carbon nanotubes, CNT, THz radiation, SiO2 substrate |
| Abstract |
We report on the voltage response of carbon nanotube devices to sub-terahertz (THz) radiation. The devices contain carbon nanotubes (CNTs), which are over their length partially suspended and partially Van der Waals bonded to a SiO2 substrate, causing a difference in thermal contact. We observe a DC voltage upon exposure to 140 GHz radiation. Based on the observed gate voltage and power dependence, at different temperatures, we argue that the observed signal is both thermal and photovoltaic. The room temperature responsivity in the microwave to THz range exceeds that of CNT based devices reported before. Authors thank Professor P. Barbara for providing the catalyst for CNT growth and Dr. N. Chumakov and V. Rylkov for stimulating discussions. The work was supported by the RFBR (Grant No. 12-02-01291-a) and by the Ministry of Education and Science of the Russian Federation (Contract No. 14.B25.31.0007). G.F. acknowledges support of the RFBR grant 12-02-01005-a. |
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0003-6951 |
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1171 |
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Korneev, Alexander; Golt'sman, Gregory; Pernice, Wolfram |
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Photonic integration meets single-photon detection |
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Miscellaneous |
| Year |
2015 |
Publication |
Laser Focus World |
Abbreviated Journal |
Laser Focus World |
| Volume |
51 |
Issue |
5 |
Pages |
47-50 |
| Keywords |
optical waveguide SSPD, SNSPD |
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By embedding superconducting nanowire single-photon detectors (SNSPDs) in nanophotonic circuits, these waveguide-integrated detectors are a key building block for future on-chip quantum computing applications. |
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RPLAB @ akorneev @ |
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1126 |
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Chandrasekar, R.; Lapin, Z. J.; Nichols, A. S.; Braun, R. M.; Fountain, A. W. |
| Title |
Photonic integrated circuits for Department of Defense-relevant chemical and biological sensing applications: state-of-the-art and future outlooks |
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Conference Article |
| Year |
2019 |
Publication |
Opt. Eng. |
Abbreviated Journal |
Opt. Eng. |
| Volume |
58 |
Issue |
02 |
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1 |
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photonic integrated circuits, PIC, optical waveguides, defense applications |
| Abstract |
Photonic integrated circuits (PICs), the optical counterpart of traditional electronic integrated circuits, are paving the way toward truly portable and highly accurate biochemical sensors for Department of Defense (DoD)-relevant applications. We introduce the fundamentals of PIC-based biochemical sensing and describe common PIC sensor architectures developed to-date for single-identification and spectroscopic sensor classes. We discuss DoD investments in PIC research and summarize current challenges. We also provide future research directions likely required to realize widespread application of PIC-based biochemical sensors. These research directions include materials research to optimize sensor components for multiplexed sensing; engineering improvements to enhance the practicality of PIC-based devices for field use; and the use of synthetic biology techniques to design new selective receptors for chemical and biological agents. |
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0091-3286 |
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1346 |
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Zolotov, P.; Divochiy, A.; Vakhtomin, Y.; Moshkova, M.; Morozov, P.; Seleznev, V.; Smirnov, K. |
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Photon-number-resolving SSPDs with system detection efficiency over 50% at telecom range |
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Conference Article |
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2018 |
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Proc. AIP Conf. |
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1936 |
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1 |
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020019 |
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NbN PNR SSPD, SNSPD |
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We used technology of making high-efficiency superconducting single-photon detectors as a basis for improvement of photon-number-resolving devices. By adding optical cavity and using an improved NbN superconducting film, we enhanced previously reported system detection efficiency at telecom range for such detectors. Our results show that implementation of optical cavity helps to develop four-section device with quantum efficiency over 50% at 1.55 µm. Performed experimental studies of detecting multi-photon optical pulses showed irregularities over defining multi-photon through single-photon quantum efficiency. |
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doi:10.1063/1.5025457 |
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1231 |
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Dauler, Eric; Kerman, Andrew; Robinson, Bryan; Yang, Joel; Voronov, Boris; Goltsman, Gregory; Hamilton, Scott; Berggren, Karl |
| Title |
Photon-number-resolution with sub-30-ps timing using multi-element superconducting nanowire single photon detectors |
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Journal Article |
| Year |
2009 |
Publication |
J. Modern Opt. |
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J. Modern Opt. |
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56 |
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2 |
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364-373 |
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PNR SSPD; SNSPD; photon-number-resolution; superconducting nanowire single photon detector; timing jitter; system detection efficiency |
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A photon-number-resolving detector based on a four-element superconducting nanowire single photon detector is demonstrated to have sub-30-ps resolution in measuring the arrival time of individual photons. This detector can be used to characterize the photon statistics of non-pulsed light sources and to mitigate dead-time effects in high-speed photon counting applications. Furthermore, a 25% system detection efficiency at 1550 nm was demonstrated, making the detector useful for both low-flux source characterization and high-speed photon-counting and quantum communication applications. The design, fabrication and testing of this detector are described, and a comparison between the measured and theoretical performance is presented. |
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RPLAB @ gujma @ |
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700 |
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