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and Integrated Photonics / Квантовые симуляторы
и интегрированная фотоника - Magnetoplasmonics
and ultrafast magnetism / Магнитоплазмоника
и сверхбыстрый магнетизм - Coherent Microoptics
and Radiophotonics / Когерентная микрооптика
и радиофотоника - Quantum Polaritonics / Квантовая поляритоника
- Quantum Communications / Квантовые коммуникации
- Quantum Optics / Квантовая оптика
- Quantum Hacking / Квантовый взлом
- Correlated Quantum Systems / Сильно-коррелированные
квантовые системы - Many-body Theory / Теория многих тел
- Superconducting
Quantum Circuits / Сверхпроводящие
квантовые цепи - Advanced Photonics / Передовая фотоника
- Education / Обучение
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- Spring School / Весенняя школа
- Summer School / Летняя школа
- International Conference
on Quantum Technologies / Международная конференция
по квантовым технологиям
- Publications / Публикации
Events / Мероприятия
Open RQC colloquium. Lecture 37
The Thirty Seventh lecture "A Polariton Graph Optimiser" in Open RQC Colloquium will be held in National University of Science and Technology MISIS (Moscow, Leninsky Avenue, 4) lecture hall № Б-536 (5th floor), on 23rd of March 2018 at 10:00 a.m by Natalia Berloff, Professor of Applied Mathematics, Department of Applied Mathematics and Theoretical Physics, University of Cambridge, UK, Professor of Skolkovo Institute of Science and Technology, Russia.
Abstract
Recently we proposed and experimentally realised polariton graphs as a novel platform for solving hard optimization problems that can be mapped into the XY model. Polariton condensates can be imprinted into any two-dimensional graph by spatial modulation of the pumping laser as Fig. 1 illustrates. By controlling the pumping intensity and profile, the graph geometry and the separation distance between the lattice sites one can control the couplings between the sites and realise various phase configurations that minimize the XY model. This gives rise to the use of the polariton graph as an analogue XY Hamiltonian simulator. The search for the global minimum of the XY Hamiltonian is via a bottom-up approach which has an advantage over classical or quantum annealing techniques, where the global ground state is reached through either a transition over metastable excited states or via tunnelling between the states in time that depends on the size of the system. In my talk I will discuss the range of optimization problems that can be efficiently solved by polariton graphs. In particular, I will elucidate a relationship between the energy spectrum of the XY Hamiltonian and the total number of condensed polariton particles.
Biography
Natalia Berloff is a Professor of Applied Mathematics, Department of Applied Mathematics and Theoretical Physics, University of Cambridge, UK and a Professor of Skolkovo Institute of Science and Technology, Russia. She received her BS (1991)and MS (1992) degree from the Department of Computational Mathematics and Cybernetics, Lomonosov Moscow State University, and PhD in Mathematics (1997) from the Department of Mathematics, Florida State University, USA. In 1997 she was a recipient of the UC Presidents Postdoctoral Fellowship and worked at Department of Mathematics, University of California, Los Angeles, USA (1997-1999), where she later became an Assistant Professor (1999-2002). Since 2002 Natalia has been a faculty member at University of Cambridge and Fellow of Jesus College. Her research interests are in quantum fluids, superfluid turbulence, coherence in nonequilibrium quantum systems: Bose Condensation of excitons and polaritons, magnons, atomic gases, superfluid helium, strong light-matter coupling in solid-state and atomic systems and driven quantum systems.
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Schools and Conferences | Школы и конференции
- International Conference on Quantum Technologies – 2019 / Международная конференция по квантовым технологиям – 2019
- 1st Science School of Quantum Communications / Первая научно-образовательная школа по Квантовым Коммуникациям
- International Conference on Quantum Technologies – 2017 / Международная конференция по квантовым технологиям – 2017
- Summer School – 2016 / Летняя школа – 2016
- Spring School for students and young researchers – 2014 / Весенняя школа для студентов и молодых ученых – 2014
- International Conference on Problems of Strongly Correlated and interacting Systems – 2014 / Международная конференция по проблемам сильно-коррелированных и взаимодействующих систем – 2014
Lecture Courses | Курсы лекций
- Anton Trushechkin, Evgeniy Kiktenko — Quantum Cryptography / Антон Трушечкин, Евгений Киктенко — Квантовая криптография
- Alexander Holevo — Mathematical Fundamentals of Quantum Informatics / Александр Холево — Математические основы квантовой информатики
- Alexey Rubtsov — Concepts and methods of modern theory of condensed matter at equilibrium / Алексей Рубцов — Концепции и методы современной теории конденсированного состояния: равновесные системы
- Boris Krippa — Introduction to the effective quantum field theory / Борис Криппа — Введение в эффективную квантовую теорию поля
- Boris Krippa — Introduction to the theory and applications of the renormalization group method / Борис Криппа — Введение в теорию и приложения метода ренормгруппы
- Alexey Kavokin — Bose-Einstein condensation of Excitons and Exciton-Polaritons / Алексей Кавокин — Бозе-Эйнштейновская конденсация экситонов и экситонных поляритонов
- Andrey Varlamov — Superconductivity and Fluctuation Phenomena in Superconductors / Андрей Варламов — Сверхпроводимость и флуктуационные явления в сверхпроводниках
- Georgy Shlyapnikov — Ultracold Quantum Gases / Георгий Шляпников — Ультрахолодные квантовые газы
- Dmitry Abanin — Introduction to modern condensed matter physics / Дмитрий Абанин — Введение в современную физику конденсированного состояния
Research | Исследования
- Quantum Simulators and Integrated Photonics / Квантовые симуляторы и интегрированная фотоника
- Magneto-optics, Plasmonics and Nanophotonics / Магнитооптика, плазмоника и нанофотоника
- Coherent Microoptics and Radiophotonics / Когерентная микрооптика и радиофотоника
- Quantum Polaritonics / Квантовая поляритоника
- Quantum Communications / Квантовые коммуникации
- Quantum Optics / Квантовая оптика
- Quantum Hacking / Квантовый взлом
- Correlated Quantum Systems / Сильно-коррелированные квантовые системы
- Many-body Theory / Теория многих тел
- Superconducting Quantum Circuits / Сверхпроводящие квантовые цепи
- Advanced Photonics / Передовая фотоника