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Towards local oscillators based on arrays of niobium Josephson junctions
Superconductor Science and Technology. 2015. Vol. 28. No. 5. P. 055002.
Galin M. A., Klushin A. M., Kurin V. V., Seliverstov S. V., Finkel M. I., Goltsman G., Müller F., Scheller T., Semenov A.
Various applications in the field of terahertz technology are in urgent need of compact, wide-tunable solid-state continuous wave radiation sources with a moderate power. However, satisfactory solutions for the THz frequency range are scarce yet. Here we report on coherent radiation from a large planar array of Josephson junctions (JJs) in the frequency range between 0.1 and 0.3 THz. The external resonator providing the synchronization of JJ array is identified as a straight fragment of a single-strip-line containing the junctions themselves. We demonstrate a prototype of the quasioptical heterodyne receiver with the JJ array as a local oscillator and a hot-electron bolometer mixer.
Research target:
Philosophy, Ethics, and Religious Studies
Priority areas:
engineering science
Language:
English
Goltsman G., Zhang W., Miao W. et al., Superconductor Science and Technology 2014 Vol. 27 No. 8 P. 085013
In this paper we study the temperature dependence of the receiver noise temperature and IF noise bandwidth of superconducting hot electron bolometer (HEB) mixers. Three superconducting NbN HEB devices of different transition temperatures (Tc) are measured at 0.85 THz and 1.4 THz at different bath temperatures (Tbath) between 4 K and 9 K. Measurement results ...
Added: February 24, 2016
Shurakov A., Lobanov Y., Goltsman G., Superconductor Science and Technology 2015 Vol. 29 No. 2 P. 023001
The discovery of hot-electron phenomena in a thin superconducting film in the last century was followed by numerous experimental studies of its appearance in different materials aiming for a better understanding of the phenomena and consequent implementation of terahertz detection systems for practical applications. In contrast to the competitors such as superconductor-insulator-superconductor tunnel junctions and ...
Added: February 19, 2016
Shcherbatenko M., Tretyakov I., Lobanov Y. et al., Applied Physics Letters 2016 Vol. 109 No. 13 P. 132602-1-132602-4
We present a physically consistent interpretation of the dc electrical properties of niobiumnitride (NbN)-based superconducting hot-electron bolometer mixers, using concepts of nonequilibrium superconductivity. Through this, we clarify what physical information can be extracted from the resistive transition and the dc current-voltage characteristics, measured at suitably chosen temperatures, and relevant for device characterization and optimization. We ...
Added: October 20, 2016
Tret’yakov I. V., Kaurova N. S., Voronov B. M. et al., Technical Physics Letters 2016 Vol. 42 No. 6 P. 563-566
Results of an experimental study of the noise temperature (Tn) and noise bandwidth (NBW) of the superconductor NbN hot-electron bolometer (HEB) mixer as a function of its temperature (Tb) are presented. It was determined that the NBW of the mixer is significantly wider at temperatures close to the critical ones (Tc) than are values measured ...
Added: October 20, 2016
Lobanov Y., Shcherbatenko M., Finkel M. I. et al., IEEE Transactions on Applied Superconductivity 2015 Vol. 25 No. 3 P. 1-4
Traditionally, hot-electron-bolometer (HEB) mixers are employed for THz and “super-THz” heterodyne detection. To explore the near-IR spectral range, we propose a fiber-coupled NbN film based HEB mixer. To enhance the incident-light absorption, a quasi-antenna consisting of a set of parallel stripes of gold is used. To study the antenna effect on the mixer performance, we ...
Added: October 15, 2015
Lobanov Y., Shcherbatenko M. L., Shurakov A. et al., Optics Letters 2014 Vol. 39 No. 6 P. 1429-1432
We report on the development of a highly sensitive optical receiver for heterodyne IR spectroscopy at the communication wavelength of 1.5 μm (200 THz) by use of a superconducting hot-electron bolometer. The results are important for the resolution of narrow spectral molecular lines in the near-IR range for the study of astronomical objects, as well ...
Added: February 24, 2016
Titova N., Kardakova A., Tovpeko N. et al., IEEE Transactions on Applied Superconductivity 2016 Vol. 27 No. 4 P. 1-4
We have measured the electron-phonon energyrelaxation time, 𝝉𝒆𝒑𝒉, in superconducting boron-doped diamond
films grown on silicon substrate by chemical vapour deposition. The observed electron-phonon cooling times vary from 160 ns at 2.70 K to 410 ns at 1.8 K following a 𝑻!𝟐-dependence. The data are consistent with the values of 𝝉𝒆𝒑𝒉 previously reported for single-crystal boron-doped ...
Added: February 2, 2017
Angeluts A. A., Bezotosnyi V. V., Cheshev E. A. et al., Laser Physics Letters 2014 Vol. 11 No. 1 P. 015004
We describe a compact dual-wavelength (1.047 and 1.053 μm) diode end-pumped Q-switched Nd:YLE laser source which has a number of applications in demand. In order to achieve its dual-wavelength operation it is suggested for the first time to use essentially nonmonotonous dependences of the threshold pump powers at these wavelengths on the cavity length in ...
Added: February 24, 2016
Seliverstov S., Maslennikov S., Ryabchun S. et al., IEEE Transactions on Applied Superconductivity 2015 Vol. 25 No. 3 P. 1-4
We characterize superconducting antenna-coupled hot-electron bolometers for direct detection of terahertz radiation operating at a temperature of 9.0 K. The estimated value of responsivity obtained from lumped-element theory is strongly different from the measured one. A numerical calculation of the detector responsivity is developed, using the Euler method, applied to the system of heat balance ...
Added: March 27, 2015
Pentina I. V., Smirnov K., Ryabchun S. et al., Technical Physics 2012 Vol. 57 No. 7 P. 971-974
We present the results of our studies of the semiconducting superlattice (SSL) frequency multiplier and its application as part of the solid state local oscillator (LO) in the terahertz heterodyne receiver based on a NbN hot-electron bolometer (HEB) mixer. We show that the SSL output power level increases as the ambient temperature is lowered to ...
Added: October 12, 2017
Tong C. E., Trifonov A., Shurakov A. et al., IEEE Transactions on Applied Superconductivity 2015 Vol. 25 No. 3 P. 1-4
A new class of microwave-operated THz power detectors based on the NbN hot-electron-bolometer (HEB) mixer is proposed. The injected microwave signal (~1 GHz) serves the dual purpose of pumping the HEB element and enabling the read-out of the internal state of the device. A cryogenic amplifier amplifies the reflected microwave signal from the device and ...
Added: October 15, 2015
Shcherbatenko M., Lobanov Y., Semenov A. V. et al., Optics Express 2016 Vol. 24 No. 26 P. 30474-30484
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 ...
Added: February 2, 2017
Tretyakov I., Ryabchun S., Finkel M. et al., Applied Physics Letters 2011 Vol. 98 No. 3 P. 033507
We report a record double sideband noise temperature of 600 K (5h/ k B) offered by a NbN hot-electron bolometer receiver at 2.5 THz. Allowing for standing wave effects, this value was found to be constant in the intermediate frequency range 1-7 GHz, which indicates that the mixer has an unprecedentedly large noise bandwidth in ...
Added: July 1, 2014
Paramonov A. A., Эпистемология и философия науки 2016 Т. 49 № 3 С. 36-42
Author treats an issue on getting a new knowledge from thought experiments. A history of the notion of thought experiment is presented in a few words. Author considers a concept of instinctive knowledge, which Ernst Mach used in his investigations of the thought experiments. He puts a question on about the cultural conditionality of “instinctive ...
Added: September 3, 2016
Gayduchenko I., Kardakova A., Fedorov G. E. et al., Journal of Applied Physics 2015 Vol. 118 No. 19 P. 194303-1-194303-9
Demand for efficient terahertz radiation detectors resulted in intensive study of the asymmetric carbon nanostructures as a possible solution for that problem. It was maintained that photothermoelectric effect under certain conditions results in strong response of such devices to terahertz radiation even at room temperature. In this work, we investigate different mechanisms underlying the response ...
Added: February 19, 2016
Ryabchun S., Tong E., Blundell R. et al., IEEE Transactions on Applied Superconductivity 2009 Vol. 19 No. 1 P. 14-19
We present the results of a stabilization scheme for terahertz receivers based on NbN hot-electron bolometer (HEB) mixers that uses microwave radiation with a frequency much lower than the gap frequency of NbN to compensate for mixer current fluctuations. A feedback control loop, which actively controls the power level of the injected microwave radiation, has ...
Added: July 1, 2014
Arutyunov K., Sedov E., Golokolenov I. et al., Physics of the Solid State, Springer Nature Switzerland AG 2019 Vol. 61 No. 9 P. 1559-1562
High-quality aluminum films on GaAs substrates are studied experimentally. The critical temperature of superconductivity is found to increase markedly with decreasing the film thickness. The observed phenomenon is considered as a manifestation of the quantum confinement effect, which affects both the density of states and the electron–phonon interaction. ...
Added: September 14, 2019
Trifonov A., Tong E., Blundell R. et al., IEEE Transactions on Applied Superconductivity 2015 Vol. 25 No. 3 P. 1-4
Using a microwave probe as a tool, we have performed experiments aimed at understanding the origin of the output-power fluctuations in hot-electron-bolometer (HEB) mixers. We use a probe frequency of 1.5 GHz. The microwave probe picks up impedance changes of the HEB, which are examined upon demodulation of the reflected wave outside the cryostat. This ...
Added: March 27, 2015
Alcaraz F. C., Pyatov P. N., Rittenberg V., Journal of Statistical Mechanics: Theory and Experiment 2008 Vol. P01006 P. 1-38
We consider the raise and peel model of a one-dimensional fluctuating interface in
the presence of an attractive wall. The model can also describe a pair annihilation
process in a disordered unquenched media with a source at one end of the system. For
the stationary states, several density profiles are studied usingMonte Carlo simulations. We point out a ...
Added: October 16, 2012
T. Karabassov, A.V. Guravova, A.Yu. Kuzin et al., Beilstein Journal of Nanotechnology 2020 Vol. 11 P. 252-262
We present a quantitative study of the current–voltage characteristics (CVC) of SFIFS Josephson junctions (S = bulk superconductor, F = metallic ferromagnet, I = insulating barrier) with weak ferromagnetic interlayers in the diffusive limit. The problem is solved in the framework of the nonlinear Usadel equations. We consider the case of a strong tunnel barrier ...
Added: February 13, 2020
Duarte E. C., Sardella E., Teixeira Saraiva T. et al., / Cornell University. Series cond-mat "arxiv.org". 2022. No. 2209.
The presence of magnetic fields and/or transport currents can cause penetration of vortices in superconductors. Their motion leads to dissipation and resistive state arises, which in turn strongly affects the performance of superconducting devices such as single-photon and single-electron detectors. Therefore, an understanding of the dissipation mechanisms in mesoscopic superconductors is not only of fundamental ...
Added: November 7, 2022
Кик М. А., Golokolenov I., Сигов, А. С. et al., Российский технологический журнал 2019 Т. 7 № 6 С. 105-121
The paper presents the generalized results of the authors’ work on the study of thin films of semimetals, which can be used in the development of universal electromagnetic radiation receivers. It is shown that thin-film materials based on semimetals have high thermal sensitivity, low intrinsic noise and an increased absorption coefficient of radiation in the ...
Added: January 11, 2020
Berlin, Heidelberg : Springer, 2012
This book constitutes the refereed proceedings of the 12th Industrial Conference on Data Mining, ICDM 2012, held in Berlin, Germany in July 2012. The 22 revised full papers presented were carefully reviewed and selected from 97 submissions. The papers are organized in topical sections on data mining in medicine and biology; data mining for energy ...
Added: December 3, 2012
Goltsman G., Antipov S., Trifonov A. et al., Superconductor Science and Technology 2019 Vol. 32 No. 7 P. 1-7
We report on the signal-to-noise and gain bandwidth of a niobium nitride (NbN) hot-electron bolometer (HEB) mixer at 2 THz fabricated on a sapphire substrate with a GaN buffer layer. Two mixers with different DC properties and geometrical dimensions were studied and they demonstrated very close bandwidth performance. The signal-to-noise bandwidth is increased to 8 ...
Added: October 30, 2019