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)
Tunnel field-effect transistors for sensitive terahertz detection
2021 · ARTICLE · en
The rectification of electromagnetic waves to direct currents is a crucial process for energy harvesting, beyond-5G wireless communications, ultra-fast science, and observational astronomy. As the radiation frequency is raised to the sub-terahertz (THz) domain, ac-to-dc conversion by conventional electronics becomes challenging and requires alternative rectification protocols. Here, we address this challenge by tunnel field-effect transistors made of bilayer graphene (BLG). Taking advantage of BLG’s electrically tunable band structure, we create a lateral tunnel junction and couple it to an antenna exposed to THz radiation. The incoming radiation is then down-converted by the tunnel junction nonlinearity, resulting in high responsivity (>4 kV/W) and low-noise (0.2 pW/Hz−−−√Hz) detection. We demonstrate how switching from intraband Ohmic to interband tunneling regime can raise detectors’ responsivity by few orders of magnitude, in agreement with the developed theory. Our work demonstrates a potential application of tunnel transistors for THz detection and reveals BLG as a promising platform therefor.
Tunnel field-effect transistors for sensitive terahertz detection
2021 в печати · ARTICLE · en
The rectification of electromagnetic waves to direct currents is a crucial process for energy harvesting, beyond-5G wireless communications, ultra-fast science, and observational astronomy. As the radiation frequency is raised to the sub-terahertz (THz) domain, ac-to-dc conversion by conventional electronics becomes challenging and requires alternative rectification protocols. Here, we address this challenge by tunnel field-effect transistors made of bilayer graphene (BLG). Taking advantage of BLG’s electrically tunable band structure, we create a lateral tunnel junction and couple it to an antenna exposed to THz radiation. The incoming radiation is then down-converted by the tunnel junction nonlinearity, resulting in high responsivity (>4 kV/W) and low-noise (0.2 pW/Hz−−−√Hz) detection. We demonstrate how switching from intraband Ohmic to interband tunneling regime can raise detectors’ responsivity by few orders of magnitude, in agreement with the developed theory. Our work demonstrates a potential application of tunnel transistors for THz detection and reveals BLG as a promising platform therefor.
Signatures of Surface Magnetic Disorder in Niobium Films
2021 · ARTICLE · en
We present our studies on the evolution of the normal and superconducting properties with thickness of thin Nb films with a low level of non-magnetic disorder ($k_Fl\approx 150$ for the thickest film in the set). The analysis of the superconducting behavior points to the presence of magnetic moments, hidden in the native oxide on the surface of Nb films. Using the Abrikosov-Gorkov theory, we obtain the density of surface magnetic moments of $10^{13}$ cm$^{-2}$, which is in agreement with the previously reported data for Nb films.
Terahertz scanning of the rabbit cornea with experimental UVB-induced damage: In vivo assessment of hydration and its verification
2021 в печати · ARTICLE · en
Significance: Water content plays a vital role in the normally functioning visual system; even a minor disruption in the water balance may be harmful. Today, no direct method exists for corneal hydration assessment, while it could be instrumental in early diagnosis and control of a variety of eye diseases. The use of terahertz (THz) radiation, which is highly sensitive to water content, appears to be very promising. Aim: To find out how THz scanning parameters of corneal tissue measured by an experimental setup, specially developed for in vivo contactless estimations of corneal reflectivity coefficient (RC), are related to pathological changes in the cornea caused by B-band ultraviolet (UVB) exposure. Approach: The setup was tested on rabbit eyes in vivo. Prior to the course of UVB irradiation and 1, 5, and 30 days after it, a series of examinations of the corneal state was made. At the same time points, corneal hydration was assessed by measuring RC. Results: The obtained data confirmed the negative impact of UVB irradiation course on the intensity of tear production and on the corneal thickness and optical parameters. A significant (1.8 times) increase in RC on the 5th day after the irradiation course, followed by a slight decrease on the 30th day after it was revealed. The RC increase measured 5 days after the UVB irradiation course generally corresponded to the increase (by a factor of 1.3) of tear production. RC increase occurred with the corneal edema, which was manifested by corneal thickening (by 18.2% in the middle area and 17.6% in corneal periphery) and an increased volume of corneal tissue (by 17.6%). Conclusions: Our results demonstrate that the proposed approach can be used for in vivo contactless estimation of the reflectivity of rabbit cornea in the THz range and, thereby, of cornea hydration.
Characterization of focusing grating couplers for telecom wavelengths in the first and second diffraction order
2021 · ARTICLE · en
In this work we studied how focusing grating couplers, developed for telecommunication C-band wavelength range, can be applied in the near infrared range. In the paper we presented prospects of usage of both first and second diffraction maxima of theoretically computed diffraction grating couplers for photonic aims. The dependence of the central wavelength of the grating on the etching depth of the photonic layer, on the period and filling factor of the grating was studied. We have compared our experimental results with numerical study, performed using finite elements method of solving differential equations. The work is important for different photonic applications and introduces new prospects in application of the already fabricated devices, developed for telecommunication wavelengths. © 2021 Institute of Physics Publishing. All rights reserved.
Performance of microheaters for tunable on-chip interferometer
2021 · ARTICLE · en
Mach-Zehnder interferometer (MZI) is a valuable practical tool in many optical science areas. In particular, high-contrast MZI are required for experimental realization of displacement-based quantum receivers that can discriminate weak coherent states of light with the minimum error rate. In this work we study phase modulators of tunable on-chip interferometer on silicon nitride (Si3N4) platform for telecom wavelength (1550 nm) consisting of several MZI. Phase modulators on one of the arms of MZI consists of microheaters and waveguide. Microheaters heat waveguides changing its refractive index due to thermo-optical effect providing a phase shift. We measure the bandwidth of phase modulators and study their operation in pulse mode.
Thermo-optical properties of nanophotonic devices with carbon nanotube films
2021 · ARTICLE · en
Here, thermo-optical properties of hybrid nanophotonic circuits SWCNTs/SiN were investigated by studying the temperature dependence of the resonance wavelengths. After experimental and theoretical study, we found the thermo-optical coefficient of SWCNTs film is equal to 2.02 10-6 RIU/0C.
Terahertz detector utilizing a SiO2/Graphene/SiO2 sandwich suspended at the feed of a planar antenna
2021 · ARTICLE · en
We report on the fabrication of a terahertz detector utilizing a SiO2/graphene/SiO2 sandwich suspended at the planar antenna feed. This design of the detector aims to enhance its sensitivity via weakening of the heat sink between graphene's phonons and those of the substrate. We achieve complete suspension of the sandwich only in case of a low fill-factor of the antenna feed area. Evaluated DC parameters of the samples are consistent with those reported in the literature. The fabrication process developed is suitable for implementing the detector proposed for signal frequencies up to several terahertz.
Towards multipixel THz Schottky diode detector with a single RF output line
2021 · ARTICLE · en
We propose the design of a dual-pixel array of Schottky diodes. Each diode is fixed between the bow-tie antenna arms on top of a SI-GaAs membrane acting as a waveguide backshort for efficient coupling of the antenna to the feedline of high-directivity horn. The detector utilizes a single RF output line: microwave reflectometer is used for the readout. The pixels are equipped with dual-mode resonator filters to eliminate the cross-talk. We evaluate the design proposed via numerical simulation and performance tests of the array subunits: NEP of 300 pW/Hz0.5 and dynamic range of 24 dB are demonstrated at 137.5 GHz.
Graphene two terminal detector as THz mixer
2021 · ARTICLE · en
The growing requirements for mobile communication networks (data transfer rates over 100 Gbps) makes it necessary to use carrier signal with a frequency of at least 100 GHz. This requires the development of cheap and broadband sub-terahertz (sub-THz) detectors. Here we report on our recent efforts toward the development of a heterodyne sub-THz detector based on a single layer graphene two-terminal device integrated with a bowtie antenna on a sapphire substrate. Our detector operates at frequency of 140 GHz, which corresponds to the maximum transmission of THz radiation in the Earth's atmosphere. The heterodyne detection is achieved by quasi-optical coupling of signals from two sub-THz radiation sources to the same detector. The measured frequency bandwidth is 5.8 GHz.
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