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| Author |
Shurakov, Alexander; Tong, Cheuk-yu E.; Blundell, Raymond; Gol’tsman, Gregory |
| Title |
A microwave pumped HEB direct detector using a homodyne readout scheme |
Type |
Abstract |
| Year |
2014 |
Publication |
Proc. 25th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 25th Int. Symp. Space Terahertz Technol. |
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Pages |
129 |
Keywords  |
waveguide NbN HEB detector, NEP |
| Abstract |
We report the results of our study on the noise performance of a fast THz detector based on the repurpose of hot electron bolometer mixer (HEB). Instead of operating with an elevated bath temperature, microwave power is injected into the HEB device, which enhances the sensitivity of the detector and at the same time provide a mechanism for reading out impedance changes of the device induced by the modulated incident THz radiation [1]. We have demonstrated an improvement of the detector’s optical noise equivalent power (NEP). Furthermore, by introducing a homodyne readout scheme based on a room temperature microwave mixer, the dynamic range of the detector is increased. The HEB devices used in this work were made of 4 nm thick NbN film. The detector chips were installed into a waveguide mixer block fitted with a corrugated horn, mounted on the cold plate of a liquid helium cryostat. The HEBs were operated at a bath temperature of 4.2 K. The signal beam was terminated on black bodies at ambient and liquid nitrogen temperatures. A chopper wheel placed in front of the cryostat window operating at a frequency of 1.48 kHz modulated the input load temperature of the detector. A cold mesh filter, centered at 830 GHz, was used to define the input signal power bandwidth. Microwave was injected through a broadband directional coupler inside the cryostat. Our experiments were mostly conducted at a pump frequency of 1.5 GHz. The reflected microwave power from the HEB device was fed into a cryogenic low noise amplifier (LNA). The output of the LNA was connected to the RF input port of a room temperature microwave mixer, which beat the reflected signal from the HEB using a copy of the original 1.5 GHz injection signal in a homodyne demodulation scheme. The amplitude of the detected power was measured by a lock-in amplifier, which was synchronized to the chopper frequency. Preliminary results yield an optical NEP of ~1 pW/ Hz 1/2 which corresponds to an improvement of a factor of 3 compared to [1], driven mainly by a lowering of the system noise floor. The dynamic range was also increased by similar amount. References 1. A. Shurakov et al. “A Microwave Pumped Hot Electron Bolometric Direct Detector,” submitted on Oct 18, 2013 to Appl. Phys. Let. |
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1365 |
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Kahl, O.; Ferrari, S.; Kovalyuk, V.; Vetter, A.; Lewes-Malandrakis, G.; Nebel, C.; Korneev, A.; Goltsman, G.; Pernice, W. |
| Title |
Spectrally multiplexed single-photon detection with hybrid superconducting nanophotonic circuits |
Type |
Journal Article |
| Year |
2017 |
Publication |
Optica |
Abbreviated Journal |
Optica |
| Volume |
4 |
Issue |
5 |
Pages |
557-562 |
| Keywords |
Waveguide integrated superconducting single-photon detectors; Nanophotonics and photonic crystals; Quantum detectors; Spectrometers and spectroscopic instrumentation |
| Abstract |
The detection of individual photons by superconducting nanowire single-photon detectors is an inherently binary mechanism, revealing either their absence or presence while concealing their spectral information. For multicolor imaging techniques, such as single-photon spectroscopy, fluorescence resonance energy transfer microscopy, and fluorescence correlation spectroscopy, wavelength discrimination is essential and mandates spectral separation prior to detection. Here, we adopt an approach borrowed from quantum photonic integration to realize a compact and scalable waveguide-integrated single-photon spectrometer capable of parallel detection on multiple wavelength channels, with temporal resolution below 50 ps and dark count rates below 10 Hz at 80% of the devices' critical current. We demonstrate multidetector devices for telecommunication and visible wavelengths, and showcase their performance by imaging silicon vacancy color centers in diamond nanoclusters. The fully integrated hybrid superconducting nanophotonic circuits enable simultaneous spectroscopy and lifetime mapping for correlative imaging and provide the ingredients for quantum wavelength-division multiplexing on a chip. |
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RPLAB @ kovalyuk @ |
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1119 |
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Kahl, O.; Ferrari, S.; Kovalyuk, V.; Vetter, A.; Lewes-Malandrakis, G.; Nebel, C.; Korneev, A.; Goltsman, G.; Pernice, W. |
| Title |
Spectrally resolved single-photon imaging with hybrid superconducting – nanophotonic circuits |
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Miscellaneous |
| Year |
2016 |
Publication |
arXiv |
Abbreviated Journal |
arXiv |
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Pages |
1-20 |
| Keywords |
waiveguide SSPD, SNSPD, imaging |
| Abstract |
The detection of individual photons is an inherently binary mechanism, revealing either their absence or presence while concealing their spectral information. For multi-color imaging techniques, such as single photon spectroscopy, fluorescence resonance energy transfer microscopy and fluorescence correlation spectroscopy, wavelength discrimination is essential and mandates spectral separation prior to detection. Here, we adopt an approach borrowed from quantum photonic integration to realize a compact and scalable waveguide-integrated single-photon spectrometer capable of parallel detection on multiple wavelength channels, with temporal resolution below 50 ps and dark count rates below 10 Hz. We demonstrate multi-detector devices for telecommunication and visible wavelengths and showcase their performance by imaging silicon vacancy color centers in diamond nanoclusters. The fully integrated hybrid superconducting-nanophotonic circuits enable simultaneous spectroscopy and lifetime mapping for correlative imaging and provide the ingredients for quantum wavelength division multiplexing on a chip. |
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1334 |
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Золотов, Ф. И.; Дивочий, А. В.; Вахтомин, Ю. Б.; Пентин, И. В.; Морозов, П. В.; Селезнев, В. А.; Смирнов, К. В. |
| Title |
Применение тонких сверхпроводниковых пленок нитрида ванадия для изготовления счетчиков одиночных ИК-фотонов |
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Conference Article |
| Year |
2018 |
Publication |
Сборн. науч. труд. VII международн. конф. по фотонике и информац. опт. |
Abbreviated Journal |
Сборн. науч. труд. VII международн. конф. по фотонике и информац. опт. |
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60-61 |
| Keywords |
VN SSPD, SNSPD |
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Получены первые результаты по применению сверхпроводниковых пленок нитрида ванадия (VN) для детекторов одиночных фотонов ИК-диапазона. Изучение сверхпроводниковых однофотонных детекторов (SSPD), изготовленных на основе ультратонких (~5 нм) пленок VN, показало возможность создания устройств с близкой к насыщению зависимостью квантовой эффективности от тока смещения детекторов в телекоммуникационном диапазоне длин волн. Также нами были исследованы кинетическая индуктивность изготовленных структур с различной длиной сверхпроводниковой полоски и времена релаксации электронов в тонких сверхпроводниковых пленках VN. |
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978-5-7262-2445-9 |
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УДК 535(06)+004(06) |
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no |
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1252 |
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Pentin, I.; Vakhtomin, Y.; Seleznev, V.; Smirnov, K. |
| Title |
Hot electron energy relaxation time in vanadium nitride superconducting film structures under THz and IR radiation |
Type |
Journal Article |
| Year |
2020 |
Publication |
Sci. Rep. |
Abbreviated Journal |
Sci. Rep. |
| Volume |
10 |
Issue |
1 |
Pages |
16819 |
| Keywords |
VN HEB |
| Abstract |
The paper presents the experimental results of studying the dynamics of electron energy relaxation in structures made of thin (d approximately 6 nm) disordered superconducting vanadium nitride (VN) films converted to a resistive state by high-frequency radiation and transport current. Under conditions of quasi-equilibrium superconductivity and temperature range close to critical (~ Tc), a direct measurement of the energy relaxation time of electrons by the beats method arising from two monochromatic sources with close frequencies radiation in sub-THz region (omega approximately 0.140 THz) and sources in the IR region (omega approximately 193 THz) was conducted. The measured time of energy relaxation of electrons in the studied VN structures upon heating of THz and IR radiation completely coincided and amounted to (2.6-2.7) ns. The studied response of VN structures to IR (omega approximately 193 THz) picosecond laser pulses also allowed us to estimate the energy relaxation time in VN structures, which was ~ 2.8 ns and is in good agreement with the result obtained by the mixing method. Also, we present the experimentally measured volt-watt responsivity (S~) within the frequency range omega approximately (0.3-6) THz VN HEB detector. The estimated values of noise equivalent power (NEP) for VN HEB and its minimum energy level (deltaE) reached NEP@1MHz approximately 6.3 x 10(-14) W/ radicalHz and deltaE approximately 8.1 x 10(-18) J, respectively. |
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National Research University Higher School of Economics, 20 Myasnitskaya Str., Moscow, 101000, Russia |
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2045-2322 |
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PMID:33033360; PMCID:PMC7546726 |
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1797 |
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Romanov, N. R.; Zolotov, P. I.; Smirnov, K. V. |
| Title |
Development of disordered ultra-thin superconducting vanadium nitride films |
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Conference Article |
| Year |
2019 |
Publication |
Proc. 8th Int. Conf. Photonics and Information Optics |
Abbreviated Journal |
Proc. 8th Int. Conf. Photonics and Information Optics |
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425-426 |
| Keywords |
VN films |
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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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Russian |
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978-5-7262-2536-4 |
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http://fioconf.mephi.ru/files/2018/12/FIO2019-Sbornik.pdf |
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no |
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1802 |
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Золотов, Ф. И.; Смирнов, К. В. |
| Title |
Особенности осаждения разупорядоченных сверхтонких плёнок нитрида ванадия |
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Conference Article |
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2019 |
Publication |
Межвузовская научно-техническая конференция студентов, аспирантов и молодых специалистов им. Е. В. Арменского |
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204-205 |
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VN films |
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В работе изучены особенности роста сверхтонких плёнок нитрида ванадия толщиной ~10 нм. Обнаружено, что при изменении температуры подложки и общего давления газов в процессе осаждения плёнок меняется значение их поверхностного сопротивления вблизи перехода к сверхпроводящему состоянию. |
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Москва |
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МИЭМ НИУ ВШЭ |
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Russian |
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no |
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1805 |
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Райтович, А. А.; Пентин, И. В.; Золотов, Ф. И.; Селезнев, В. А.; Вахтомин, Ю. Б.; Смирнов, К. В. |
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Время энергетической релаксации электронов в сверхпроводниковых VN наноструктурах |
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Conference Article |
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2018 |
Publication |
Сборник трудов 13 Всероссийской конференции молодых ученых |
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236-238 |
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VN films |
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Саратовский филиал ИРЭ им. В.А. Котельникова РАН |
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Техно-Декор |
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Russian |
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Наноэлектроника, нанофотоника и нелинейная физика |
| Notes |
http://nnnph.ru/data/documents/Sborni-trudov-NNNF-2018.pdf |
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1807 |
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Гершензон, Е. М.; Семенов, И. Т.; Фогельсон, М. С. |
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Спин-решеточная релаксация доноров фосфора в кремнии при одноосной деформации образца |
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Journal Article |
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1985 |
Publication |
Физика и техника полупроводников |
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Физика и техника полупроводников |
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19 |
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9 |
Pages |
1696-1698 |
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uniaxial pressure, Ge, phosphorus donors, spin-lattice relaxation |
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no |
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1760 |
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Mel’nikov, A. P.; Gurvich, Y. A.; Shestakov, L. N.; Gershenzon, E. M. |
| Title |
Magnetic field effects on the nonohmic impurity conduction of uncompensated crystalline silicon |
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Journal Article |
| Year |
2001 |
Publication |
Jetp Lett. |
Abbreviated Journal |
Jetp Lett. |
| Volume |
73 |
Issue |
1 |
Pages |
44-47 |
| Keywords |
uncompensated crystalline silicon, nonohmic impurity conduction, magnetic field |
| Abstract |
The impurity conduction of a series of crystalline silicon samples with the concentration of major impurity N ≈ 3 × 1016 cm−3 and with a varied, but very small, compensation K was measured as a function of the electric field E in various magnetic fields H-σ(H, E). It was found that, at K < 10−3 and in moderate E, where these samples are characterized by a negative nonohmicity (dσ(0, E)/dE < 0), the ratio σ(H, E)/σ(0, E) > 1 (negative magnetoresistance). With increasing E, these inequalities are simultaneously reversed (positive nonohmicity and positive magnetoresistance). It is suggested that both negative and positive nonohmicities are due to electron transitions in electric fields from impurity ground states to states in the Mott-Hubbard gap. |
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0021-3640 |
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1752 |
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