Works
290 results
Алгебра 1. Лекция 4. Формальные степенные ряды и производящие функции
2026LectureAlexey Ilyin
Магнитометрическое устройство для бесконтактного измерения электрического тока (патент на полезную модель №245044)
2026PatentAlexey Legoshin, I. D. Makhotin, R. V. Serebryakov, A. V. Tsykunov
Федеральная служба по интеллектуальной собственности. ООО "ИДМ-Плюс".
Algebraization Techniques and Rigid-Analytic Artin-Grothendieck Vanishing
2026Journal articleOfer Gabber, Bogdan Zavyalov
Annales scientifiques de l'Ecole normale superieure
Reinforcement Networks: novel framework for collaborative Multi-Agent Reinforcement Learning tasks
2025PreprintKryzhanovskiy, Maksim, Glazyrina, Svetlana, Ischenko, Roman, Константин Вячеславович Воронцов
arXiv (Cornell University)
Text Tree Edit Distance: A Language Model-Based Metric for Text Hierarchies
2025Conference paperFedor Sobolevsky, Константин Вячеславович Воронцов
ruSciFact: Open Benchmark for Verifying Scientific Facts in Russian
2025Conference paperA. Vatolin, N. Gerasimenko, N. Loukachevitch, A. Ianina +1
Computational Linguistics and Intellectual Technologies
The methodology of multi-criteria evaluation of text markup models based on inconsistent expert markup
2025Conference paperAlexander Levikin, Ildar Khabutdinov, Andrey Grabovoy, Константин Вячеславович Воронцов
Computational Linguistics and Intellectual Technologies
Automated Detection of Human Values in Texts: ML Challenges and Performance Benchmarks
2025Conference paperOlga Rink, Archil Maysuradze, Artem Fedorov, Roman Ischenko +4
Lecture notes in computer science
On smooth-group actions on reductive groups and spherical buildings
2025PreprintJeffrey D. Adler, Joshua M. Lansky, Loren Spice
Спектроскопия холодных атомов рубидия-87 и её применение в квантовой сенсорике
2025Conference talkКсения Лискова, Alexey Legoshin
Микроэлектроника и информатика – 2025. 32 Всероссийская межвузовская научно-техническая конференция студентов, аспирантов и молодых ученых с международным участием
Magic-Wavelength Optical Dipole Trap for Enhanced Cold Atom Manipulation
2025Conference talkT. A. Voronova, K. O. Babichev, Ксения Лискова, Alexey Legoshin +5
VIII International Conference on Quantum Technologies (ICQT 2025)
Cold atomic ensembles are among the most versatile tools in modern physics research. They play a key role in advancing next-generation frequency standards, qubit architectures, and quantum sensing technologies. Many experiments demand prolonged spatial confinement of atoms to facilitate extended interactions with electromagnetic fields, achievable through electric, magnetic, gravitational, or optical trapping mechanisms.
A cornerstone of atomic trapping is the magneto-optical trap (MOT), which relies on six counterpropagating laser beams and a pair of anti-Helmholtz coils to produce a radially symmetric quadrupole magnetic field with a central zero point.
Alternatively, optical dipole traps exploit the electric dipole interaction with a tightly focused, fardetuned high-power laser beam, offering weaker confinement than MOTs—typically below 1 mK. Unlike MOTs, these traps permit extremely weak optical excitation, circumventing limitations imposed by radiation pressure. Additionally, their trapping mechanism is largely insensitive to ground-state magnetic sublevels (neglecting tensor polarizability effects), enabling versatile configurations such as optical lattices.
Figure 1: Image of atoms trapped in the MOT. The atomic cloud is at the center of the image. The cloud dimensions are approximately 1 mm.
ble of confining Rb 87 atomic clouds at temperatures near 175 µ K. For dipole trapping, we adopted a farred-detuned (1012 nm) laser system, chosen for its dual functionality: we plan to use it both as a trapping beam and as one component in two-photon Rydberg excitation schemes. A further advantage of this configuration is its potential to confine Rydberg atoms while meeting the magic wavelength condition for ground-to-Rydberg transitions.
Magic-wavelength optical dipole traps offer particularly powerful advantages for cold atom manipulation. At this specific wavelength, the light shift for two atomic states becomes identical, effectively decoupling the internal atomic dynamics from the external motional states. This enables long coherence times for quantum operations while maintaining strong spatial confinement. Furthermore, such traps allow state-insensitive confinement, which is crucial for precision measurements and quantum information processing. The magic wavelength condition also facilitates efficient Rydberg excitation by providing identical trapping potentials for both ground and Rydberg states, minimizing decoherence during excitation processes.
We characterized the dipole trap intended for atom transfer, achieving a maximum depth of 3 mK under our experimental conditions—surpassing the Doppler cooling limit and ensuring efficient atomic confinement.
Almost Coherent Modules and Almost Coherent Sheaves
2025BookBogdan Zavyalov
Memoirs of the European Mathematical Society