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Author | Prokhodtsov, A.; Golikov, A.; An, P.; Kovalyuk, V.; Goltsman, G.; Arakelyan, S.; Evlyukhin, A.; Kalachev, A.; Naumov, A. | ||||
Title | Effect of silicon oxide coating on a silicon nitride focusing grating coupler efficiency | Type | Conference Article | ||
Year | 2019 | Publication | EPJ Web Conf. | Abbreviated Journal | EPJ Web Conf. |
Volume | 220 | Issue | Pages | 02009 | |
Keywords | grating coupler, SiO2 | ||||
Abstract | The dependence of the efficiency of the focusing grating couplers on the period and filling factor before and after deposition of the upper silicon oxide layer was experimentally studied. The obtained data are of practical importance for tunable integrated-optical devices based on silicon nitride platform. | ||||
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Series Volume | Series Issue | Edition | |||
ISSN | 2100-014X | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Serial | 1188 | |||
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Author | Nikogosyan, A. S.; Martirosyan, R. M.; Hakhoumian, A. A.; Makaryan, A. H.; Tadevosyan, V. R.; Goltsman, G. N.; Antipov, S. V. | ||||
Title | Effect of absorption on the efficiency of terahertz radiation generation in the metal waveguide partially filled with nonlinear crystal LiNbO3, DAST or ZnTe | Type | Journal Article | ||
Year | 2019 | Publication | J. Contemp. Phys. | Abbreviated Journal | J. Contemp. Phys. |
Volume | 54 | Issue | 1 | Pages | 97-104 |
Keywords | nonlinear crystal, THz, waveguide | ||||
Abstract | The influence of terahertz (THz) radiation absorption on the efficiency of generation of coherent THz radiation in the system ‘nonlinear-optical crystal partially filling the cross section of a rectangular metal waveguide’ has been investigated. The efficiency of the nonlinear frequency conversion of optical laser radiation to the THz range depends on the loss in the system and the fulfillment of the phase-matching (FM) condition in a nonlinear crystal. The method of partially filling of a metal waveguide with a nonlinear optical crystal is used to ensure phase matching. The phase matching is achieved by numerical determination of the thickness of the nonlinear crystal, that is the degree of partial filling of the waveguide. The attenuation of THz radiation caused by losses both in the metal walls of the waveguide and in the crystal was studied, taking into account the dimension of the cross section of the waveguide, the degree of partial filling, and the dielectric constant of the crystal. It is shown that the partial filling of the waveguide with a nonlinear crystal results in an increase in the efficiency of generation of THz radiation by an order of magnitude, owing to the decrease in absorption. | ||||
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Series Volume | Series Issue | Edition | |||
ISSN | 1068-3372 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Serial | 1289 | |||
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Author | Kitaeva, G. K.; Kornienko, V. V.; Kuznetsov, K. A.; Pentin, I. V.; Smirnov, K. V.; Vakhtomin, Y. B. | ||||
Title | Direct detection of the idler THz radiation generated by spontaneous parametric down-conversion | Type | Journal Article | ||
Year | 2019 | Publication | Opt. Lett. | Abbreviated Journal | Opt. Lett. |
Volume | 44 | Issue | 5 | Pages | 1198-1201 |
Keywords | HEB applications | ||||
Abstract | We study parametric down-conversion (PDC) of optical laser radiation in the strongly frequency non-degenerate regime which is promising for the generation of quantum-correlated pairs of extremely different spectral ranges, the optical and the terahertz (THz) ones. The possibility to detect tenuous THz-frequency photon fluxes generated under low-gain spontaneous PDC is demonstrated using a hot electron bolometer. Then experimental dependences of the THz radiation power on the detection angle and on the pump intensity are analyzed. | ||||
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Series Volume | Series Issue | Edition | |||
ISSN | 0146-9592 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | PMID:30821747 | Approved | no | ||
Call Number | Serial | 1801 | |||
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Author | Romanov, N. R.; Zolotov, P. I.; Smirnov, K. V. | ||||
Title | Development of disordered ultra-thin superconducting vanadium nitride films | Type | Conference Article | ||
Year | 2019 | Publication | Proc. 8th Int. Conf. Photonics and Information Optics | Abbreviated Journal | Proc. 8th Int. Conf. Photonics and Information Optics |
Volume | Issue | Pages | 425-426 | ||
Keywords | VN films | ||||
Abstract | We present the results of development and research of superconducting vanadium nitride VN films ~10 nm thick having different level of disorder. It is showed that both silicon substrate temperature T sub in process of magnetron sputtering and total gas pressure P affect superconducting transition temperature of sputtered films and R 300 /R 20 ratio defining their level of disorder. VN films suitable for development of superconducting single-photon detectors on their basis are obtained. | ||||
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Language | Russian | Summary Language | Original Title | ||
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Series Volume | Series Issue | Edition | |||
ISSN | ISBN | 978-5-7262-2536-4 | Medium | ||
Area | Expedition | Conference | |||
Notes | http://fioconf.mephi.ru/files/2018/12/FIO2019-Sbornik.pdf | Approved | no | ||
Call Number | Serial | 1802 | |||
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Author | Zubkova, E.; Golikov, A.; An, P.; Kovalyuk, V.; Korneev, A.; Ferrari, S.; Pernice, W.; Goltsman, G. | ||||
Title | CWDM demultiplexer using anti-reflection, contra-directional couplers based on silicon nitride rib waveguide | Type | Conference Article | ||
Year | 2019 | Publication | J. Phys.: Conf. Ser. | Abbreviated Journal | J. Phys.: Conf. Ser. |
Volume | 1410 | Issue | Pages | 012179 | |
Keywords | coarse wavelength-division multiplexing, Si3N4 rib waveguide | ||||
Abstract | We report on the development and fabrication of a 9-channel coarse wavelength-division multiplexing for telecommunication wavelengths (1550 nm) using anti-reflection contra-directional couplers, based on silicon nitride (Si3N4) rib waveguide. The transmitted and reflected spectrum in each channel of the demultiplexer were measured. The average full width at half maximum of the transmitted (reflected) spectra is about 3 nm. | ||||
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Series Volume | Series Issue | Edition | |||
ISSN | 1742-6588 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Serial | 1183 | |||
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Author | Elezov, M.; Ozhegov, R.; Goltsman, G.; Makarov, V. | ||||
Title | Countermeasure against bright-light attack on superconducting nanowire single-photon detector in quantum key distribution | Type | Journal Article | ||
Year | 2019 | Publication | Opt. Express | Abbreviated Journal | Opt. Express |
Volume | 27 | Issue | 21 | Pages | 30979-30988 |
Keywords | SSPD, SNSPD | ||||
Abstract | We present an active anti-latching system for superconducting nanowire single-photon detectors. We experimentally test it against a bright-light attack, previously used to compromise security of quantum key distribution. Although our system detects continuous blinding, the detector is shown to be partially blindable and controllable by specially tailored sequences of bright pulses. Improvements to the countermeasure are suggested. | ||||
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Language | English | Summary Language | Original Title | ||
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 1094-4087 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | PMID:31684339 | Approved | no | ||
Call Number | Serial | 1275 | |||
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Author | Komrakova, S.; Javadzade, J.; Vorobyov, V.; Bolshedvorskii, S.; Soshenko, V.; Akimov, A.; Kovalyuk, V.; Korneev, A.; Goltsman, G. | ||||
Title | CMOS compatible nanoantenna-nanodiamond integration | Type | Conference Article | ||
Year | 2019 | Publication | J. Phys.: Conf. Ser. | Abbreviated Journal | J. Phys.: Conf. Ser. |
Volume | 1410 | Issue | Pages | 012180 | |
Keywords | bull-eye antenna, hyperbolic metamaterials, NV-centers | ||||
Abstract | Here we demonstrate CMOS compatible method to deterministically produce nanoantenna with nanodiamonds systems on example of bull-eye antenna on top of on hyperbolic metamaterials. We study the statistics of the placement of nanodiamonds and measure the fluorescence lifetime and the second-order correlation function of NV-centers inside nanodiamonds. | ||||
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Series Volume | Series Issue | Edition | |||
ISSN | 1742-6588 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Serial | 1182 | |||
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Author | Moshkova, M. A.; Divochiy, A. V.; Morozov, P. V.; Antipov, A. V.; Vakhtomin, Yu. B.; Smirnov, K. V. | ||||
Title | Characterization of topologies of superconducting photon number resolving detectors | Type | Conference Article | ||
Year | 2019 | Publication | Proc. 8th Int. Conf. Photonics and Information Optics | Abbreviated Journal | Proc. 8th Int. Conf. Photonics and Information Optics |
Volume | Issue | Pages | 465-466 | ||
Keywords | PNR SSPD | ||||
Abstract | Comparative analysis for different topologies of superconducting single-photon detectors with ability to resolve up to 4 photons in a short pulse of IR radiation has been carry out. It was developed the detector with a system detection efficiency of ~ 85 % at λ = 1550 nm. The possibility of using such detector to restore photon statistics of a pulsed radiation source was demonstrated. | ||||
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Publisher | Place of Publication | Editor | |||
Language | Russian | Summary Language | Original Title | ||
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | ISBN | 978-5-7262-2536-4 | Medium | ||
Area | Expedition | Conference | |||
Notes | http://fioconf.mephi.ru/files/2018/12/FIO2019-Sbornik.pdf | Approved | no | ||
Call Number | Serial | 1803 | |||
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Author | Titova, N.; Gayduchenko, I. A.; Moskotin, M. V.; Fedorov, G. F.; Goltsman, G. N. | ||||
Title | Carbon nanotube based terahertz radiation detectors | Type | Conference Article | ||
Year | 2019 | Publication | J. Phys.: Conf. Ser. | Abbreviated Journal | J. Phys.: Conf. Ser. |
Volume | 1410 | Issue | Pages | 012208 (1 to 5) | |
Keywords | carbon nanotubes, CNT | ||||
Abstract | In this paper, we study terahertz detectors based on single quasimetallic carbon nanotubes (CNT) with asymmetric contacts and different metal pairs. We demonstrate that, depending on the contact metallization of the device, various detection mechanisms are manifested. | ||||
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Language | Summary Language | Original Title | |||
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 1742-6588 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Serial | 1270 | |||
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Author | Tovpeko, N. A.; Trifonov, A. V.; Semenov, A. V.; Antipov, S. V.; Kaurova, N. S.; Titova, N. A.; Goltsman, G. N. | ||||
Title | Bandwidth performance of a THz normal metal TiN bolometer-mixer | Type | Conference Article | ||
Year | 2019 | Publication | Proc. 30th Int. Symp. Space Terahertz Technol. | Abbreviated Journal | Proc. 30th Int. Symp. Space Terahertz Technol. |
Volume | Issue | Pages | 102-103 | ||
Keywords | TiN normal metal bolometer, NMB | ||||
Abstract | We report on the bandwidth performance of the normal metal TiN bolometer-mixer on top of an Al 2 O 3 substrate, which is capable to operate in a wide range of bath temperatures from 77 K – 300 K. The choice of the combination TiN / Al 2 O 3 is related to an advanced heat transport between the film and the substrate in this pair and the sufficient temperature coefficient of resistance. The data were taken at 132.5 – 145.5 GHz with two BWOs as a signal and an LO source. Measurements were taken on TiN films of different thickness starting from 20 nm down to 5 nm coupled into a spiral Au antenna, which improves matching of incoming radiation with the thin TiN fim. Our experiments demonstrate effective heat coupling from a TiN thin film to an Al 2 O 3 substrate (111) boosting gain bandwidth (GB) of TiN bolometer up to 6 GHz for 5 nm thin film. Current results indicate weak temperature dependence of GB on the bath temperature of the TiN bolometer. Theoretical estimations of GB performance meet with experimental data for 5 nm thin TiN films. | ||||
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Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Serial | 1279 | |||
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Author | Ferrari, S.; Kovalyuk, V.; Vetter, A.; Lee, C.; Rockstuhl, C.; Semenov, A.; Gol'tsman, G.; Pernice, W. | ||||
Title | Analysis of the detection response of waveguide-integrated superconducting nanowire single-photon detectors at high count rate | Type | Journal Article | ||
Year | 2019 | Publication | Appl. Phys. Lett. | Abbreviated Journal | Appl. Phys. Lett. |
Volume | 115 | Issue | 10 | Pages | 101104 |
Keywords | SSPD, SNSPD, waveguide | ||||
Abstract | Nanophotonic circuitry and superconducting nanowires have been successfully combined for detecting single photons, propagating in an integrated photonic circuit, with high efficiency and low noise and timing uncertainty. Waveguide-integrated superconducting nanowire single-photon detectors (SNSPDs) can nowadays be engineered to achieve subnanosecond recovery times and can potentially be adopted for applications requiring Gcps count rates. However, particular attention shall be paid to such an extreme count rate regime since artifacts in the detector functionality emerge. In particular, a count-rate dependent detection efficiency has been encountered that can compromise the accuracy of quantum detector tomography experiments. Here, we investigate the response of waveguide-integrated SNSPDs at high photon flux and identify the presence of parasitic currents due to the accumulation of charge in the readout electronics to cause the above-mentioned artifact in the detection efficiency. Our approach allows us to determine the maximum photon count rate at which the detector can be operated without adverse effects. Our findings are particularly important to avoid artifacts when applying SNSPDs for quantum tomography. We acknowledge support through ERC Consolidator Grant No. 724707 and from the Deutsche Forschungsgemeinschaft through Project No. PE 1832/5-1,2, as well as funding by the Volkswagen Foundation. This project has received funding from the European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 675745. V.K. and G.G. acknowledge support from the Russian Science Foundation Project No. 16-12-00045 (NbN film deposition and testing). A.V. acknowledges support from the Karlsruhe School of Optics and Photonics (KSOP). |
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Language | Summary Language | Original Title | |||
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0003-6951 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Serial | 1185 | |||
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Author | Ren, Y.; Zhang, D. X.; Zhou, K. M.; Miao, W.; Zhang, W.; Shi, S. C.; Seleznev, V.; Pentin, I.; Vakhtomin, Y.; Smirnov, K. | ||||
Title | 10.6 μm heterodyne receiver based on a superconducting hot-electron bolometer mixer and a quantum cascade laser | Type | Journal Article | ||
Year | 2019 | Publication | AIP Advances | Abbreviated Journal | AIP Advances |
Volume | 9 | Issue | 7 | Pages | 075307 |
Keywords | NbN HEB mixers, QCL, IR | ||||
Abstract | We report on the development of a heterodyne receiver at mid-infrared wavelength for high-resolution spectroscopy applications. The receiver employs a superconducting NbN hot electron bolometer as a mixer and a room temperature distributed feedback quantum cascade laser operating at 10.6 μm (28.2 THz) as a local oscillator. The stabilization of the heterodyne receiver has been achieved using a feedback loop controlling the output power of the laser. Improved Allan variance times as well as a double sideband receiver noise temperature of 5000 K and a noise bandwidth of 2.8 GHz of the receiver system are demonstrated. The work is supported in part by the National Key R&D Program of China under Grant 2018YFA0404701, by the CAS program under Grant QYZDJ-SSW-SLH043 and GJJSTD20180003, by the National Natural Science Foundation of China (NSFC) under Grant 11773083, by the “Hundred Talents Program” of the “Pioneer Initiative”, and in part by the CAS Key Lab for Radio Astronomy. |
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Series Volume | Series Issue | Edition | |||
ISSN | 2158-3226 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | Serial | 1293 | |||
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