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Корнеев Александр Александрович

Московский институт электроники и математики им. А.Н. Тихонова

Профиль на hse.ru ↗ тел.: +7 (903) 970-72-53 | 15220
Публикаций
75
Языков
2
Наград
5
Конференций
0
Профиль Публикации (75) Курсы (5)

Профессиональные интересы

физикасверхпроводимостьсверхпроводниковая электроникасверхпроводниковый однофотонный детекторквантовая оптикаинтегральная оптика

Должности

  • Профессор — Московский институт электроники и математики им. А.Н. Тихонова, Департамент электронной инженерии

Био

  • · Начал работать в НИУ ВШЭ в 2013 году.
  • · Научно-педагогический стаж: 24 года.

Образование

  • 2016 · Доктор физико-математических наук
  • 2006 · Кандидат физико-математических наук
  • 2000 · Специалитет: Московский педагогический государственный университет, специальность «Физика с дополнительной специальностью филология», квалификация «Учитель физики и иностранного языка (английский язык)»

Опыт работы

  • · 2022: настоящее время: профессор, МИЭМ НИУ ВШЭ
  • · 2007 - 2022: : профессор, Московский педагогический государственный университет (МПГУ)
  • · 2013: настоящее время: доцент, МИЭМ НИУ ВШЭ
  • · 2015 - 2016: : доцент, Московский физико-технический институт (МФТИ)
  • · 2014 - 2016: : ведущий научный сотрудник, заведующий лабораторией, Московский физико-технический институт (МФТИ)
  • · 2005 - 2007: : старший преподаватель, Московский педагогический государственный университет (МПГУ)
  • · 2000 - 2005: : научный сотрудник, Московский педагогический государственный университет (МПГУ)

Награды и поощрения

  • · Благодарность Московского института электроники и математики им. А.Н. Тихонова НИУ ВШЭ (февраль 2026)
  • · Надбавка за публикацию в журнале из Списка А (и приравненном к нему научном издании) (2025–2026, 2024–2025, 2023–2024)
  • · Надбавка за публикацию в международном рецензируемом научном издании (2022–2023, 2021–2022, 2019–2021)
  • · Надбавка за статью в зарубежном рецензируемом журнале (2014–2016)
  • · Надбавка за статью в зарубежном рецензируемом научном издании (2016–2018)

Гранты и проекты

  • — · на соискание учёной степени кандидата наук

Идентификаторы исследователя

Публикации (75)

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.

DOI ↗ PDF ↗

Superconductivity in highly disordered NbN nanowires

2016 · ARTICLE · en

The topic of superconductivity in strongly disordered materials has attractedsignificant attention. These materials appear to be rather promising for fabrication of various nanoscale devices such as bolometers and transition edge sensors of electromagnetic radiation. The vividly debated subject of intrinsic spatial inhomogeneity responsible for thenon-Bardeen–Cooper–Schrieffer relation between the superconducting gap and the pairing potential is crucial both for understanding the fundamental issues of superconductivity in highly disordered superconductors, and for theoperation of corresponding nanoelectronic devices. Here we report an experimental study of theelectron transport properties of narrow NbN nanowires with effective cross sections of the order of the debated inhomogeneity scales. The temperature dependence of the critical current follows the textbook Ginzburg–Landau prediction for thequasi-one-dimensional superconducting channel Ic∼(1-T/Tc)3/2. We find that conventional models based on the thephase slip mechanism provide reasonable fits for the shape of R(T) transitions. Better agreement with R(T) data can be achieved assuming theexistence of short ‘weak links’ with slightly reduced local critical temperature Tc. Hence, one may conclude that an ‘exotic’ intrinsic electronic inhomogeneity either does not exist in our structures, or, if it doesexist, itdoes not affect their resistive state properties, or does not provide any specific impact distinguishablefrom conventional weak links.

DOI ↗ PDF ↗

Coherent Dynamics and Decoherence in a Superconducting Weak Link

2016 · ARTICLE · en

We demonstrate coherent dynamics of quantized magnetic fluxes in a superconducting loop with a weak link, a nanobridge patterned from the same thin NbN film as the loop. The bridge is a short, rounded shape constriction, close to 10 nm long and 20–30 nm wide, having minimal width at its center. It superposes neighboring fluxoid states of the loop. Quantum state control and coherent oscillations in the driven time evolution of the tunnel-junctionless system are achieved. Decoherence and energy relaxation in the system are studied using a combination of microwave spectroscopy and direct time-domain techniques. The effective flux noise behavior suggests inductance fluctuations as a possible cause of the decoherence.

DOI ↗ PDF ↗

Potential of a Superconducting Photon Counter for Heterodyne Detection at Telecommunication Wavelength

2016 · ARTICLE · en

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 intermediate frequency gain bandwidth (also referred to as response or conversion bandwidth) was limited by the spectral band of a single-photon response pulse of the detector, which is proportional to the detector size. We observed a gain bandwidth of 65 MHz and 140 MHz for 7 × 7 µm2 and 3 × 3 µm2 devices, respectively. A tiny amount of the required local oscillator power and wide gain and noise bandwidths, along with unnecessary low noise amplification, make this technology prominent for various applications, with the possibility for future development of a photon counting heterodyne-born large-scale array.

DOI ↗ PDF ↗

Cavity-Enhanced and Ultrafast Superconducting Single-Photon Detectors

2016 · ARTICLE · en

Ultrafast single-photon detectors with high efficiency are of utmost importance for many applications in the context of integrated quantum photonic circuits. Detectors based on superconductor nanowires attached to optical waveguides are particularly appealing for this purpose. However, their speed is limited because the required high absorption efficiency necessitates long nanowires deposited on top of the waveguide. This enhances the kinetic inductance and makes the detectors slow. Here, we solve this problem by aligning the nanowire, contrary to usual choice, perpendicular to the waveguide to realize devices with a length below 1 μm. By integrating the nanowire into a photonic crystal cavity, we recover high absorption efficiency, thus enhancing the detection efficiency by more than an order of magnitude. Our cavity enhanced superconducting nanowire detectors are fully embedded in silicon nanophotonic circuits and efficiently detect single photons at telecom wavelengths. The detectors possess subnanosecond decay (∼120 ps) and recovery times (∼510 ps) and thus show potential for GHz count rates at low timing jitter (∼32 ps). The small absorption volume allows efficient threshold multiphoton detection.

DOI ↗ PDF ↗

Characterization of MoSi Superconducting Single-Photon Detectors in the Magnetic Field

2015 · ARTICLE · en

We investigate the response mechanism of nanowire superconducting single-photon detectors (SSPDs) made of amorphous MoxSi1-x. We study the dependence of photon count and dark count rates on bias current in magnetic fields up to 113 mT at 1.7 K temperature. The observed behavior of photon counts is similar to the one recently observed in NbN SSPDs. Our results show that the detecting mechanism of relatively high-energy photons does not involve the vortex penetration from the edges of the film, and on the contrary, the detecting mechanism of low-energy photons probably involves the vortex penetration from the film edges.

DOI ↗ PDF ↗

Vortex-assisted mechanism of photon counting in a superconducting nanowire single-photon detector revealed by external magnetic field

2015 · ARTICLE · en

We use an external magnetic field to probe the detection mechanism of a superconducting nanowire single-photon detector. We argue that the hot belt model (which assumes partial suppression of the superconducting order parameter Delta across the whole width of the superconducting nanowire after absorption of the photon) does not explain observed weak-field dependence of the photon count rate (PCR) for photons with lambda = 450 nm and noticeable decrease of PCR (with increasing the magnetic field) in a range of the currents for photons with wavelengths lambda = 450-1200 nm. Found experimental results for all studied wavelengths can be explained by the vortex hot spot model (which assumes partial suppression of Delta in the area with size smaller than the width of the nanowire) if one takes into account nucleation and entrance of the vortices to the photon induced hot spot and their pinning by the hot spot with relatively large size and strongly suppressed Delta.

DOI ↗ PDF ↗

Waveguide-integrated single- and multi-photon detection at telecom wavelengths using superconducting nanowires

2015 · ARTICLE · en

We investigate single- and multi-photon detection regimes of superconducting nanowire detectors embedded in silicon nitride nanophotonic circuits. At near-infrared wavelengths, simultaneous detection of up to three photons is observed for 120 nm wide nanowires biased far from the critical current, while narrow nanowires below 100 nm provide efficient single photon detection. A theoretical model is proposed to determine the different detection regimes and to calculate the corresponding internal quantum efficiency. The predicted saturation of the internal quantum efficiency in the single photon regime agrees well with plateau behavior observed at high bias currents.

DOI ↗ PDF ↗

Energy Relaxtation and Hot Spot Formation in Superconducting Single Photon Detectors SSPDS

2015 · ARTICLE · en

We have studied the mechanism of energy relaxation and resistive state formation after absorption of a single photon for different wavelengths and materials of single photon detectors. Our results are in good agrreement with the hot spot model.

DOI ↗ PDF ↗

Спонтанные и фотоиндуцированные резистивные состояния в узких сверхпроводящих NbN полосках

2015 · BOOK · ru

Монография посвящена актуальной проблеме современной фотоники: разработке высокочувствительных и быстродействующих сверхпроводниковых однофотонных детекторов на основе тонкой пленки NbN. В работе исследуются неравновесные процессы, протекающие в тонкой сверхпроводящей пленке после поглощения инфракрасного фотона и приводящие к возникновению резистивного состояния. На этих процессах основан механизм фотоотклика исследуемого в работе однофотонного детектора. В частности, исследуются зависимости квантовой эффективности и скорости темнового счета от геометрических параметров детектора: толщины пленки, ширины полоски, а также от величины транспортного тока детектора.

Курсы (5)