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| Author | Ozhegov, R.; Morozov, D.; Maslennikov, S.; Okunev, O.; Smirnov, K.; Gol'tsman, G. | ||||
| Title | Submillimeter wave range imaging system for registering human body radiation and finding out the things covered under clothes | Type | Conference Article | ||
| Year | 2004 | Publication | Proc. 3rd Int. exhibition and conf. Non-Destructive Testing Equipment and Devices | Abbreviated Journal  |
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| Publisher | Place of Publication | Moscow | Editor | ||
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| Notes | Approved | no | |||
| Call Number | Serial | 345 | |||
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| Author | Ozhegov, R.; Maslennikov, S.; Morozov, D.; Okunev, O.; Smirnov, K.; Gol'tsman, G. | ||||
| Title | Imaging system for submillimeter wave range | Type | Conference Article | ||
| Year | 2004 | Publication | Proc. Tenth All-Russian sceintific conference of student-physicists and young sceintists (VNKSF-10) | Abbreviated Journal |
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| Publisher | Place of Publication | Moscow | Editor | ||
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| Notes | Approved | no | |||
| Call Number | RPLAB @ s @ thzimaging_vnksf10_2004 | Serial | 347 | ||
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| Author | Glejm, A. V.; Anisimov, A. A.; Asnis, L. N.; Vakhtomin, Yu. B.; Divochiy, A. V.; Egorov, V. I.; Kovalyuk, V. V.; Korneev, A. A.; Kynev, S. M.; Nazarov, Yu. V.; Ozhegov, R. V.; Rupasov, A. V.; Smirnov, K. V.; Smirnov, M. A.; Goltsman, G. N.; Kozlov, S. A. | ||||
| Title | Quantum key distribution in an optical fiber at distances of up to 200 km and a bit rate of 180 bit/s | Type | Journal Article | ||
| Year | 2014 | Publication | Bulletin of the Russian Academy of Sciences. Physics | Abbreviated Journal |
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| Volume | 78 | Issue | 3 | Pages | 171-175 |
| Keywords | SSPD, SNSPD, applications | ||||
| Abstract | An experimental demonstration of a subcarrier-wave quantum cryptography system with superconducting single-photon detectors (SSPDs) that distributes a secure key in a single-mode fiber at distance of 25 km with a bit rate of 800 kbit/s, a distance of 100 km with a bit rate of 19 kbit/s, and a distance of 200 km with a bit rate of 0.18 kbit/s is described. | ||||
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| ISSN | 1062-8738 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | RPLAB @ kovalyuk @ | Serial | 940 | ||
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| Author | Smirnov, K. V.; Vakhtomin, Yu. B.; Divochiy, A. V.; Ozhegov, R. V.; Pentin, I. V.; Gol'tsman, G. N. | ||||
| Title | Infrared and terahertz detectors on basis of superconducting nanostructures | Type | Conference Article | ||
| Year | 2010 | Publication | Microwave and Telecom. Technol. (CriMiCo), 20th Int. Crimean Conf. | Abbreviated Journal |
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| Volume | Issue | Pages | 823-824 | ||
| Keywords | SSPD, SNSPD, HEB | ||||
| Abstract | Results of development of single-photon receiving systems of visible, infrared and terahertz range based on thin-film superconducting nanostructures are presented. The receiving systems are produced on the basis of superconducting nanostructures, which function by means of hot-electron phenomena. | ||||
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| Publisher | Place of Publication | Editor | IEEE | ||
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| Notes | Approved | no | |||
| Call Number | RPLAB @ sasha @ smirnov2010infrared | Serial | 1025 | ||
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| Author | Elezov, M. S.; Ozhegov, R. V.; Goltsman, G. N.; Makarov, V.; Vinogradov, E. A.; Naumov, A. V.; Gladush, M. G.; Karimullin, K. R. | ||||
| Title | Development of the experimental setup for investigation of latching of superconducting single-photon detector caused by blinding attack on the quantum key distribution system | Type | Conference Article | ||
| Year | 2017 | Publication | EPJ Web Conf. | Abbreviated Journal |
EPJ Web Conf. |
| Volume | 132 | Issue | Pages | 01004 (1 to 2) | |
| Keywords | QKD, SSPD, SNSPD | ||||
| Abstract | Recently bright-light control of the SSPD has been demonstrated. This attack employed a “backdoor” in the detector biasing scheme. Under bright-light illumination, SSPD becomes resistive and remains “latched” in the resistive state even when the light is switched off. While the SSPD is latched, Eve can simulate SSPD single-photon response by sending strong light pulses, thus deceiving Bob. We developed the experimental setup for investigation of a dependence on latching threshold of SSPD on optical pulse length and peak power. By knowing latching threshold it is possible to understand essential requirements for development countermeasures against blinding attack on quantum key distribution system with SSPDs. | ||||
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| ISSN | 2100-014X | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Serial | 1327 | |||
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| Author | Elezov, M. S.; Ozhegov, R. V.; Kurochkin, Y. V.; Goltsman, G. N.; Makarov, V. S.; Samartsev, V. V.; Vinogradov, E. A.; Naumov, A. V.; Karimullin, K. R. | ||||
| Title | Countermeasures against blinding attack on superconducting nanowire detectors for QKD | Type | Conference Article | ||
| Year | 2015 | Publication | EPJ Web Conf. | Abbreviated Journal |
EPJ Web Conf. |
| Volume | 103 | Issue | Pages | 10002 (1 to 2) | |
| Keywords | SSPD, SNSPD, QKD | ||||
| Abstract | Nowadays, the superconducting single-photon detectors (SSPDs) are used in Quantum Key Distribution (QKD) instead of single-photon avalanche photodiodes. Recently bright-light control of the SSPD has been demonstrated. This attack employed a “backdoor” in the detector biasing technique. We developed the autoreset system which returns the SSPD to superconducting state when it is latched. We investigate latched state of the SSPD and define limit conditions for effective blinding attack. Peculiarity of the blinding attack is a long nonsingle photon response of the SSPD. It is much longer than usual single photon response. Besides, we need follow up response duration of the SSPD. These countermeasures allow us to prevent blind attack on SSPDs for Quantum Key Distribution. | ||||
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| ISSN | 2100-014X | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Serial | 1352 | |||
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| Author | Elezov, M. S.; Ozhegov, R. V.; Goltsman, G. N.; Makarov, V. | ||||
| Title | Development of the experimental setup for investigation of latching of superconducting single-photon detector caused by blinding attack on the quantum key distribution system | Type | Conference Article | ||
| Year | 2017 | Publication | EPJ Web of Conferences | Abbreviated Journal |
EPJ Web of Conferences |
| Volume | 132 | Issue | 2 | Pages | 2 |
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| Abstract | Recently bright-light control of the SSPD has been demonstrated. This attack employed a “backdoor†in the detector biasing scheme. Under bright-light illumination, SSPD becomes resistive and remains “latched†in the resistive state even when the light is switched off. While the SSPD is latched, Eve can simulate SSPD single-photon response by sending strong light pulses, thus deceiving Bob. We developed the experimental setup for investigation of a dependence on latching threshold of SSPD on optical pulse length and peak power. By knowing latching threshold it is possible to understand essential requirements for development countermeasures against blinding attack on quantum key distribution system with SSPDs. |
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| Notes | Approved | no | |||
| Call Number | RPLAB @ kovalyuk @ | Serial | 1116 | ||
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| Author | Lobanov, Y.; Shcherbatenko, M.; Semenov, A.; Kovalyuk, V.; Kahl, O.; Ferrari, S.; Korneev, A.; Ozhegov, R.; Kaurova, N.; Voronov, B. M.; Pernice, W. H. P.; Gol'tsman, G. N. | ||||
| Title | Superconducting nanowire single photon detector for coherent detection of weak signals | Type | Journal Article | ||
| Year | 2017 | Publication | IEEE Trans. Appl. Supercond. | Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
| Volume | 27 | Issue | 4 | Pages | 1-5 |
| Keywords | NbN SSPD mixer, SNSPD, nanophotonic waveguide | ||||
| Abstract | Traditional photon detectors are operated in the direct detection mode, counting incident photons with a known quantum efficiency. Here, we have investigated a superconducting nanowire single photon detector (SNSPD) operated as a photon counting mixer at telecommunication wavelength around 1.5 μm. This regime of operation combines excellent sensitivity of a photon counting detector with excellent spectral resolution given by the heterodyne technique. Advantageously, we have found that low local oscillator (LO) power of the order of hundreds of femtowatts to a few picowatts is sufficient for clear observation of the incident test signal with the sensitivity approaching the quantum limit. With further optimization, the required LO power could be significantly reduced, which is promising for many practical applications, such as the development of receiver matrices or recording ultralow signals at a level of less-than-one-photon per second. In addition to a traditional NbN-based SNSPD operated with normal incidence coupling, we also use detectors with a travelling wave geometry, where a NbN nanowire is placed on the top of a Si 3 N 4 nanophotonic waveguide. This approach is fully scalable and a large number of devices could be integrated on a single chip. | ||||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 1051-8223 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Serial | 1206 | |||
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| Author | Baksheeva, K.; Ozhegov, R.; Goltsman, G.; Kinev, N.; Koshelets, V.; Kochnev, A.; Betzalel, N.; Puzenko, A.; Ben Ishai, P.; Feldman, Y. | ||||
| Title | The sub THz emission of the human body under physiological stress | Type | Journal Article | ||
| Year | 2021 | Publication | IEEE Trans. Terahertz Sci. Technol. | Abbreviated Journal |
IEEE Trans. Terahertz Sci. Technol. |
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| Keywords | skin sub-THz emission, medicine | ||||
| Abstract | We present evidence that in the sub-THz frequency band, human skin can be considered as an electromagnetic bio-metamaterial, in that its natural emission is a product of skin tissue geometry and embedded structures. Radiometry was performed on 32 human subjects from 480 to 700 GHz. Concurrently, the subjects were exposed to stress, while heart pulse rate (PS) and galvanic skin response (GSR) were also measured. The results are substantially different from the expected black body radiation signal of the skin surface. PS and GSR correlate to the emissivity. Using a simulation model for the skin, we find that the sweat duct is a critical element. The simulated frequency spectra qualitatively match the measured emission spectra and show that our sub-THz emission is modulated by our level of mental stress. This opens avenues for the remote monitoring of the human state. | ||||
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| Notes | Approved | no | |||
| Call Number | 9380570 | Serial | 1259 | ||
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| Author | Ozhegov, R. V.; Okunev, O. V.; Gol’tsman, G. N.; Filippenko, L. V.; Koshelets, V. P. | ||||
| Title | Noise equivalent temperature difference of a superconducting integrated terahertz receiver | Type | Journal Article | ||
| Year | 2009 | Publication | J. Commun. Technol. Electron. | Abbreviated Journal |
J. Commun. Technol. Electron. |
| Volume | 54 | Issue | 6 | Pages | 716-720 |
| Keywords | SIS mixer SIR NETD, FFO, harmonic mixer | ||||
| Abstract | The dependence of the noise equivalent temperature difference (NETD) of a superconducting integrated receiver (SIR) on the receiver noise temperature and the inputsignal level has been investigated. An unprecedented NETD of 13±2 mK has been measured at a SIR noise temperature of 200 K, intermediate-frequency bandwidth of 4 GHz, and time constant of 1 s. With a decrease in the input signal, an improvement in the NETD is observed. This effect is explained by a reduction in the influence of the instabilities of the receiver power supply and the amplification circuit that occur when the input signal is decreased. | ||||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 1064-2269 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Serial | 1400 | |||
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| Author | Baksheeva, K.; Vdovydchenko, A.; Gorshkov, K.; Ozhegov, R.; Kinev, N.; Koshelets, V.; Goltsman, G. | ||||
| Title | Study of human skin radiation in the terahertz frequency range | Type | Conference Article | ||
| Year | 2019 | Publication | J. Phys.: Conf. Ser. | Abbreviated Journal |
J. Phys.: Conf. Ser. |
| Volume | 1410 | Issue | Pages | 012076 (1 to 5) | |
| Keywords | SIS mixer, SIR, applications, medicine, sympathetic nervous system, SNS | ||||
| Abstract | The radiation of human skin in the terahertz frequency range under the influence of mental stresses has been studied in the current work. An experimental setup for observation of changes in human skin radiation, which occur under the influence of psychological stresses, by means of a superconducting integrated receiver has been developed. More than 30 volunteers participate in these studies, which allows us to verify presence of correlation between the signals from the superconducting integrated terahertz receiver and other sensors that monitor human mental stress. | ||||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 1742-6588 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Serial | 1272 | |||
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| Author | Shcherbatenko, M.; Lobanov, Y.; Semenov, A.; Kovalyuk, V.; Korneev, A.; Ozhegov, R.; Kazakov, A.; Voronov, B.M.; Goltsman, G.N. | ||||
| Title | Potential of a superconducting photon counter for heterodyne detection at the telecommunication wavelength | Type | Journal Article | ||
| Year | 2016 | Publication | Opt. Express | Abbreviated Journal |
Opt. Express |
| Volume | 24 | Issue | 26 | Pages | 30474-30484 |
| Keywords | NbN SSPD mixer, SNSPD | ||||
| Abstract | Here, we report on the successful operation of a NbN thin film superconducting nanowire single-photon detector (SNSPD) in a coherent mode (as a mixer) at the telecommunication wavelength of 1550 nm. Providing the local oscillator power of the order of a few picowatts, we were practically able to reach the quantum noise limited sensitivity. The intermediate frequency gain bandwidth (also referred to as response or conversion bandwidth) was limited by the spectral band of a single-photon response pulse of the detector, which is proportional to the detector size. We observed a gain bandwidth of 65 MHz and 140 MHz for 7 x 7 microm2 and 3 x 3 microm2 devices, respectively. A tiny amount of the required local oscillator power and wide gain and noise bandwidths, along with unnecessary low noise amplification, make this technology prominent for various applications, with the possibility for future development of a photon counting heterodyne-born large-scale array. | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 1094-4087 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:28059394 | Approved | no | ||
| Call Number | Serial | 1207 | |||
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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 | ||
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| ISSN | 1094-4087 | ISBN | Medium | ||
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| Notes | PMID:31684339 | Approved | no | ||
| Call Number | Serial | 1275 | |||
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| Author | Maslennikov, S. N.; Finkel, M. I.; Antipov, S. V.; Polyakov, S. L.; Zhang, W.; Ozhegov, R.; Vachtomin, Yu. B.; Svechnikov, S. I.; Smirnov, K. V.; Korotetskaya, Yu. P.; Kaurova, N. S.; Gol'tsman, G. N.; Voronov, B. M. | ||||
| Title | Spiral antenna coupled and directly coupled NbN HEB mixers in the frequency range from 1 to 70 THz | Type | Conference Article | ||
| Year | 2006 | Publication | Proc. 17th Int. Symp. Space Terahertz Technol. | Abbreviated Journal |
Proc. 17th Int. Symp. Space Terahertz Technol. |
| Volume | Issue | Pages | 177-179 | ||
| Keywords | directly coupled NbN HEB mixers | ||||
| Abstract | We investigate both antenna coupled and directly coupled HEB mixers at several LO frequencies within the range of 2.5 THz to 70 THz. H20 (2.5+10.7 THz), and CO2 (30 THz) gas discharge lasers are used as the local oscillators. The noise temperature of antenna coupled mixers is measured at LO frequencies of 2.5 THz, 3.8 THz, and 30 THz. The results for both antenna coupled and directly coupled mixer types are compared. The devices with in—plane dimensions of 5x5 ,um 2 are pumped by LO radiation at 10.7 THz. The directly coupled HEB demonstrates nearly flat dependence of responsivity on frequency in the range of 25+64 THz. | ||||
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| Publisher | Place of Publication | Paris, France | Editor | ||
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| Notes | Approved | no | |||
| Call Number | Serial | 386 | |||
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| Author | Ozhegov, R. V.; Gorshkov, K. N.; Smirnov, K. V.; Gol’tsman, G. N.; Filippenko, L. V.; Koshelets, V. P. | ||||
| Title | Terahertz imaging system based on superconducting integrated receiver | Type | Conference Article | ||
| Year | 2010 | Publication | Proc. 2-nd Int. Conf. Terahertz and Microwave radiation: Generation, Detection and Applications | Abbreviated Journal |
Proc. 2-nd Int. Conf. Terahertz and Microwave radiation: Generation, Detection and Applications |
| Volume | Issue | Pages | 20-22 | ||
| Keywords | SIS mixer, SIR | ||||
| Abstract | The development of terahertz imaging instruments for security systems is on the cutting edge of terahertz technology. We are developing a THz imaging system based on a superconducting integrated receiver (SIR). An SIR is a new type of heterodyne receiver based on an SIS mixer integrated with a flux-flow oscillator (FFO) and a harmonic mixer which is used for phase-locking the FFO. Developing an array of SIRs would allow obtaining amplitude and phase characteristics of incident radiation in the plane of the receiver. Employing an SIR in an imaging system means building an entirely new instrument with many advantages compare to traditional systems: i) high temperature resolution, comparable to the best results for incoherent receivers; ii) high spectral resolution allowing spectral analysis of various substances; iii) the local oscillator frequency can be varied to obtain images at different frequencies, effectively providing “color” images; iv) since a heterodyne receiver preserves the phase of the radiation, it is possible to construct 3D images. The paper presents a prototype THz imaging system using an 1 pixel SIR. We have studied the dependence of the noise equivalent temperature difference (NETD) on the integration time and also possible ways of achieving best possible sensitivity. An NETD of 13 mK was obtained with an integration time of 1 sec a detection bandwidth of 4 GHz at a local oscillator frequency of 520 GHz. An important advantage of an FFO is its wide operation range: 300-700 GHz. | ||||
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| Notes | Approved | no | |||
| Call Number | ozhegov2010terahertz | Serial | 1397 | ||
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