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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 | 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.; Gol'tsman, G. N.; Kinev, N. V.; Koshelets, V. P. | ||||
| Title | The stability of a terahertz receiver based on a superconducting integrated receiver | Type | Journal Article | ||
| Year | 2011 | Publication | Supercond. Sci. Technol. | Abbreviated Journal | Supercond. Sci. Technol. |
| Volume | 24 | Issue | 3 | Pages | 035003 |
| Keywords | SIS mixer, SIR, stability | ||||
| Abstract | We present the results of stability testing of a terahertz radiometer based on a superconducting receiver with a SIS tunnel junction as the mixer and a flux-flow oscillator as the local oscillator. In the continuum mode, the receiver with a noise temperature of 95 K at 510 GHz measured over the intermediate frequency (IF) passband of 4-8 GHz offered a noise equivalent temperature difference of 10 ± 1 mK at an integration time of 1 s. We offer a method to significantly increase the integration time without the use of complex measurement equipment. The receiver observed a strong signal over a final detection bandwidth of 4 GHz and offered an Allan time of 5 s. | ||||
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| Notes | Approved | no | |||
| Call Number | RPLAB @ gujma @ | Serial |
705 | ||
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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 | |
| 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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| Series Volume | Series Issue | Edition | |||
| ISSN | 1062-8738 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | RPLAB @ kovalyuk @ | Serial |
940 | ||
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| Author | Ozhegov, R. V.; Smirnov, A. V.; Vakhtomin, Yu. B.; Smirnov, K. V.; Divochiy, A. V.; Goltsman, G. N. | ||||
| Title | Ultrafast superconducting bolometer receivers for terahertz applications | Type | Abstract | ||
| Year | 2009 | Publication | Proc. PIERS | Abbreviated Journal | Proc. PIERS |
| Volume | Issue | Pages | 867 | ||
| Keywords | HEB | ||||
| Abstract | The research by the group of Moscow State Pedagogical University into the hot-electron phenomena in thin superconducting films has led to the development of new types of detectors and their use both in fundamental and applied studies. In this paper, we present the results of testing the terahertz HEB receiver systems based on ultrathin (∼ 4 nm) NbN and MoRe detectors with a response time of 50 ps and 1 ns, respectively. We have developed three types of devices which differ in the way a terahertz signal is coupled to the detector and cover the following ranges: 0.3–3 THz, 0.1–30 THz and 25–70 THz. In the case of the receiving system optimized for 0.3–3 THz, the sensitive element (a strip of asuperconductor with planar dimensions of 0.2μm (length) by 1.7μm (width)) was integrated witha planar broadband log-spiral antenna. For additional focusing ofthe incident radiation a silicon hyperhemispherical lens was used. For the 0.1–30 THz receivingsystem, the sensitive element was patterned as parallel strips(2μm wide each) filling an area of 500×500μm2with a filling factor of 0.5. In the receivingsystem of this type we used direct coupling of the incident radiation to the sensitive element. Inthe 25–70 THz range (detector type 2/2a in Table 1) we used a square-shaped superconductingdetector with planar dimensions of 10×10μm2. Incident radiation was coupled to the detectorwith the use of a germanium hyperhemispherical lens.The response time of the above receiving systems is determined by the cooling rate of the hotelectrons in the film. That depends on the electron-phonon interaction time, which is less forultrathin NbN than in MoRe. | ||||
| Address | Moscow, Russia | ||||
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| Publisher | The Electromagnetics Academy | Place of Publication | 777 Concord Avenue, Suite 207 Cambridge, MA 02138 | Editor | |
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| ISSN | 1559-9450 | ISBN | 978-1-934142-09-7 | Medium | |
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| Notes | Approved | no | |||
| Call Number | RPLAB @ sasha @ ozhegovultrafast | Serial |
1022 | ||
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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 | |
| 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 | Ozhegov, R.; Elezov, M.; Kurochkin, Y.; Kurochkin, V.; Divochiy, A.; Kovalyuk, V.; Vachtomin, Y.; Smirnov, K.; Goltsman, G. | ||||
| Title | Quantum key distribution over 300 | Type | Conference Article | ||
| Year | 2014 | Publication | Proc. SPIE | Abbreviated Journal | Proc. SPIE |
| Volume | 9440 | Issue | Pages | 1F (1 to 9) | |
| Keywords | SSPD, SNSPD applicatins, quantum key distribution, QKD | ||||
| Abstract | We discuss the possibility of polarization state reconstruction and measurement over 302 km by Superconducting Single- Photon Detectors (SSPDs). Because of the excellent characteristics and the possibility to be effectively coupled to singlemode optical fiber many applications of the SSPD have already been reported. The most impressive one is the quantum key distribution (QKD) over 250 km distance. This demonstration shows further possibilities for the improvement of the characteristics of quantum-cryptographic systems such as increasing the bit rate and the quantum channel length, and decreasing the quantum bit error rate (QBER). This improvement is possible because SSPDs have the best characteristics in comparison with other single-photon detectors. We have demonstrated the possibility of polarization state reconstruction and measurement over 302.5 km with superconducting single-photon detectors. The advantage of an autocompensating optical scheme, also known as “plugandplay” for quantum key distribution, is high stability in the presence of distortions along the line. To increase the distance of quantum key distribution with this optical scheme we implement the superconducting single photon detectors (SSPD). At the 5 MHz pulse repetition frequency and the average photon number equal to 0.4 we measured a 33 bit/s quantum key generation for a 101.7 km single mode ber quantum channel. The extremely low SSPD dark count rate allowed us to keep QBER at 1.6% level. | ||||
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| Publisher | SPIE | Place of Publication | Editor | Orlikovsky, A. A. | |
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| Area | Expedition | Conference | International Conference on Micro- and Nano-Electronics | ||
| Notes | Approved | no | |||
| Call Number | RPLAB @ sasha @ ozhegov2014quantum | Serial |
1048 | ||
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| Author | Smirnov, K. V.; Vakhtomin, Yu. B.; Divochiy, A. V.; Ozhegov, R. V.; Pentin, I. V.; Slivinskaya, E. V.; Tarkhov, M. A.; Gol’tsman, G. N. | ||||
| Title | Single-photon detectors for the visible and infrared parts of the spectrum based on NbN nanostructures | Type | Abstract | ||
| Year | 2009 | Publication | Proc. Progress In Electromagnetics Research Symp. | Abbreviated Journal | Proc. Progress In Electromagnetics Research Symp. |
| Volume | Issue | Pages | 863-864 | ||
| Keywords | SSPD, SNSPD | ||||
| Abstract | The research by the group of Moscow State Pedagogical University into the hot-electron phenomena in thin superconducting films has led to the development of new types ofdetectors [1, 2] and their use both in fundamental and applied studies [3–6]. In this paper, wepresent the results of the development and fabrication of receiving systems for the visible andinfrared parts of the spectrum optimised for use in telecommunication systems and quantumcryptography. | ||||
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| Publisher | Place of Publication | Moscow, Russia | Editor | ||
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| Notes | Approved | no | |||
| Call Number | RPLAB @ sasha @ smirnovsession | Serial |
1050 | ||
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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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| Call Number | RPLAB @ kovalyuk @ | Serial |
1116 | ||
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