Гольцман Григорий Наумович
Московский институт электроники и математики им. А.Н. Тихонова
Профессиональные интересы
Должности
- Заведующий кафедрой — Московский институт электроники и математики им. А.Н. Тихонова, Базовая кафедра квантовой оптики и телекоммуникаций ЗАО «Сконтел»
- Профессор — Московский институт электроники и математики им. А.Н. Тихонова, Базовая кафедра квантовой оптики и телекоммуникаций ЗАО «Сконтел»
Био
- · Начал работать в НИУ ВШЭ в 2013 году.
- · Научно-педагогический стаж: 55 лет.
Образование
- 1988 · Ученое звание: Профессор
- 1985 · Доктор физико-математических наук
- 1968 · Специалитет: Московский государственный педагогический институт им. В.И. Ленина, специальность «Физика», квалификация «Учитель физики и звание учителя средней школы»
Опыт работы
- · Общий стаж - 54 года
- · Научно-педагогический стаж - 51 год
- · Преподавательский стаж - 44 года
Награды и поощрения
- · Медаль "В память 850-летия Москвы" (февраль 1997)
- · Надбавка за публикацию в журнале из Списка А (и приравненном к нему научном издании) (2025–2026, 2024–2025)
- · Надбавка за публикацию в международном рецензируемом научном издании (2022–2023, 2021–2022, 2020–2022, 2018–2020)
- · Надбавка за статью в зарубежном рецензируемом журнале (2014–2016)
- · Надбавка за статью в зарубежном рецензируемом научном издании (2016–2018)
- · Лучший преподаватель — 2014
Гранты и проекты
- — · на соискание учёной степени кандидата наук
Конференции (2)
Показать все
- · 2022: Школа-конференция с международным участием по оптоэлектронике, фотонике и нанобиоструктурам Saint Petersburg OPEN (Санкт-Петербург). Доклад: A mmWave Rod Antenna Array Compatible with a PCB Prototyping Technology
- · 2022: Школа-конференция с международным участием по оптоэлектронике, фотонике и нанобиоструктурам Saint Petersburg OPEN (Санкт-Петербург). Доклад: Thermo-optical effect in a Mach-Zehnder interferometer on a silicon nitride platform for quantum photonic applications
Идентификаторы исследователя
- ORCID:
0000-0002-1960-9161 - ResearcherID:
A-4189-2014 - SPIN РИНЦ:
4622-7870 - Google Scholar: https://scholar.google.ru/citations?user=qljeUfEAAAAJ&hl=ru
- Scopus AuthorID:
7006771637
Публикации (253)
Integrated Bragg waveguides as an efficient optical notch filter on silicon nitride platform
2017 · ARTICLE · en
We modeled and fabricated integrated optical Bragg waveguides on a silicon nitride (Si 3 N 4) platform. These waveguides would serve as efficient notch-filters with the desired characteristics. Transmission spectra of the fabricated integrated notch filters have been measured and attenuation at the desired wavelength of 1550 nm down to-43 dB was observed. Performance of the filters has been studied depending on different parameters, such as pitch, filling factor, and height of teeth of the Bragg grating.
Comparison of hot spot formation in NbC and NbN single photon detectors
2016 · ARTICLE · en
We report an experimental investigation of the hot spot evolution in superconducting single photons detectors (SSPDs) made of disordered superconducting materials with different diffusivity and energy down-conversion time: 33-nmthickNbN and 23-nm-thick NbC films. We have demonstrated that in NbC film only 405 nm photons produce sufficiently largehot-spot to trigger a single-photon response. The dependence of detection efficiency on bias current for 405-nm photons in NbC is similar to that for 3400-nm photons in NbN. In NbC large diffusivity and down-conversion time result in 1D critical current suppression profile compared to usual 2D profile in NbN.
Quasi-1-Dimensional Superconductivity in Highly Disordered NbN Nanowires
2016 · PREPRINT · en
The topic of superconductivity in strongly disordered materials has attracted a significant attention. In particular vivid debates are related to the subject of intrinsic spatial inhomogeneity responsible for non-BCS relation between the superconducting gap and the pairing potential. Here we report experimental study of electron transport properties of narrow NbN nanowires with effective cross sections of the order of the debated inhomogeneity scales. We find that conventional models based on phase slip concept provide reasonable fits for the shape of the R(T) transition curve. Temperature dependence of the critical current follows the text-book Ginzburg-Landau prediction for quasi-one-dimensional superconducting channel Ic~(1-T/Tc)3/2. Hence, one may conclude that the intrinsic electronic inhomogeneity either does not exist in our structures, or, if exist, does not affect their resistive state properties.
Relaxation of the resistive superconducting state in boron-doped diamond films
2016 · ARTICLE · en
We report a study of the relaxation time of the restoration of the resistive superconducting state in single crystalline boron-doped diamond using amplitude-modulated absorption of (sub-)THz radiation (AMAR). The films grown on an insulating diamond substrate have a low carrier density of about 2.5×1021cm−3 and a critical temperature of about 2K. By changing the modulation frequency we find a high-frequency rolloff which we associate with the characteristic time of energy relaxation between the electron and the phonon systems or the relaxation time for nonequilibrium superconductivity. Our main result is that the electron-phonon scattering time varies clearly as T−2, over the accessible temperature range of 1.7 to 2.2 K. In addition, we find, upon approaching the critical temperature Tc, evidence for an increasing relaxation time on both sides of Tc.
Two-dimensional plasmons in lateral carbon nanotube network structures and their effect on the terahertz radiation detection
2016 · ARTICLE · en
We consider the carrier transport and plasmonic phenomena in the lateral carbon nanotube (CNT) networks forming the device channel with asymmetric electrodes. One electrode is the Ohmic contact to the CNT network and the other contact is the Schottky contact. These structures can serve as detectors of the terahertz (THz) radiation. We develop the device model for collective response of the lateral CNT networks which comprise a mixture of randomly oriented semiconductor CNTs (s-CNTs) and quasi-metal CNTs (m-CNTs). The proposed model includes the concept of the collective two-dimensional (2D) plasmons in relatively dense networks of randomly oriented CNTs (CNT “felt”) and predicts the detector responsivity spectral characteristics exhibiting sharp resonant peaks at the signal frequencies corresponding to the 2D plasmonic resonances. The detection mechanism is the rectification of the ac current due the nonlinearity of the Schottky contact current-voltage characteristics under the conditions of a strong enhancement of the potential drop at this contact associated with the plasmon excitation. The detector responsivity depends on the fractions of the s- and m-CNTs. The burning of the near-contact regions of the m-CNTs or destruction of these CNTs leads to a marked increase in the responsivity in agreement with our experimental data. The resonant THz detectors with sufficiently dense lateral CNT networks can compete and surpass other THz detectors using plasmonic effects at room temperatures.
Study of transmittance and reflectance spectra of the cornea and the sclera in the THz frequency range
2016 · ARTICLE · en
An adequate water balance (hydration extent) is one of the basic factors of normal eye function, including its external shells: the cornea and the sclera. Adequate control of corneal and scleral hydration is very important for early diagnosis of a variety of eye diseases, stating indications for and contraindications against keratorefractive surgeries and the choice of contact lens correction solutions. THz systems of creating images in reflected beams are likely to become ideal instruments of noninvasive control of corneal and scleral hydration degrees. This paper reports on the results of a study involving transmittance and reflectance spectra for the cornea and the sclera of rabbit and human eyes, as well as those of the rabbit eye, in the frequency range of 0.13 to 0.32 THz. The dependence of the reflectance coefficient of these tissues on water mass percentage content was determined. The experiments were performed on three corneas, three rabbit scleras, two rabbit eyes, and three human scleras. The preliminary results demonstrate that the proposed technique, based on the use of a continuous THz radiation, may be utilized to create a device for noninvasive control of corneal and scleral hydration, which has clear potential of broad practical application. © 2016 Society of Photo-Optical Instrumentation Engineers (SPIE).
Fully integrated quantum photonic circuit with an electrically driven light source
2016 · ARTICLE · en
Photonic quantum technologies allow quantum phenomena to be exploited in applications such as quantum cryptography, quantum simulation and quantum computation. A key requirement for practical devices is the scalable integration of single-photon sources, detectors and linear optical elements on a common platform. Nanophotonic circuits enable the realization of complex linear optical systems, while non-classical light can be measured with waveguide-integrated detectors. However, reproducible single-photon sources with high brightness and compatibility with photonic devices remain elusive for fully integrated systems. Here, we report the observation of antibunching in the light emitted from an electrically driven carbon nanotube embedded within a photonic quantum circuit. Non-classical light generated on chip is recorded under cryogenic conditions with waveguide-integrated superconducting single-photon detectors, without requiring optical filtering. Because exclusively scalable fabrication and deposition methods are used, our results establish carbon nanotubes as promising nanoscale single-photon emitters for hybrid quantum photonic devices.
Asymmetric devices based on carbon nanotubes as detectors of sub-THz radiation
2016 · ARTICLE · en
Demand for efficient terahertz (THz) radiation detectors resulted in intensive study of the asymmetric carbon nanostructures as a possible solution for that problem. In this work, we systematically investigate the response of asymmetric carbon nanodevices to sub-terahertz radiation using different sensing elements: from dense carbon nanotube (CNT) network to individual CNT. We conclude that the detectors based on individual CNTs both semiconducting and quasi-metallic demonstrate much stronger response in sub-THz region than detectors based on disordered CNT networks at room temperature. We also demonstrate the possibility of using asymmetric detectors based on CNT for imaging in the THz range at room temperature. Further optimization of the device configuration may result in appearance of novel terahertz radiation detectors.
The influence of the diffusion cooling on the noise band of the superconductor NbN hot-electron bolometer operating in the terahertz range
2016 · ARTICLE · en
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 at 4.2 K. The NBW of the mixer measured at the heterodyne frequency of 2.5 THz at temperature Tb close to Tc was ~13 GHz, as compared with 6 GHz at Tb = 4.2 K. This experiment clearly demonstrates the limitation of the thermal flow from the NbN bridge at Tb ≪ Tc for mixers manufactured by the in situ technique. This limitation is close in its nature to the Andreev reflection on the superconductor/ metal boundary. In this case, the noise temperature of the studied mixer increased from 1100 to 3800 K.
Nonequilibrium interpretation of DC properties of NbN superconducting hot electron bolometers
2016 · ARTICLE · en
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 point out that the intrinsic spatial variation of the electronic properties of disordered superconductors, such as NbN, leads to a variation from device to device
Курсы (3)
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Технологические основы квантовых вычислений и квантовых коммуникаций (семинар наставника) · 5 раза
2025/2026, 2024/2025, 2023/2024, 2022/2023, 2021/2022 · семинар наставника · рус
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Устройства для квантовых вычислений и коммуникации · 3 раза
2025/2026, 2023/2024, 2022/2023 · Бакалавриат · рус
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Квантовые компьютеры и квантовые коммуникации
2021/2022 · Магистратура · рус