Dr. Evgeny Sedov

Biography

Evgeny Sedov has received his B.Sc. and M.Sc. degrees (with honours) in Optical Engineering from the Vladimir State University (VlSU), Vladimir, Russia in 2009 and 2011. He has got his Ph.D. degree in Physics and Mathematics from the Prokhorov General Physics Institute of the Russian Academy of Science, Moscow, Russia in 2015. From 2016 to 2019 he was a Research Fellow in the Quantum Light and Matter Group at the University of Southampton, Southampton, UK. Nevertheless, Dr. Sedov did not break relations with his alma mater. In 2016, he was awarded the 3-year individual research grant from the Russian Foundation for Basic Research to work as a Senior Researcher at VlSU. In 2019 he was appointed Associate Professor at the Department of Physics and Applied Mathematics of VlSU. Dr. Sedov is a winner of the Youth Research Competition of Foundation for Assistance to Small Innovative Enterprises in 2013. In 2014, he was awarded a stipend from the Vladimir Region, Russia “For advanced research in the field of natural sciences”. He got grants of the President of the Russian Federation for young scientists in 2016 and 2019.

Expertise

From the very beginning of the research career, the study of Dr. Sedov was focused on the problem of interaction of light with condensed matter at the microscopic level aimed in understanding of physics of light behaviour and developing methods of control of light. His bachelor and master research were devoted to light interaction with ensembles of ultracold atoms in low-dimensional spatially periodic trapping potentials. Most attention was paid to nonlinear effects, including higher orders nonlinearities. A new type of a lattice structure, polaritonic crystal was proposed. Physical principles of spatially distributed optical writing, storing and retrieving of information based on controlling a group velocity of atomic polaritons in a polaritonic crystal were suggested.

After completing the M.Sc. program by Dr. Sedov, spatially periodic structures remained in the focus of his research interest. However, lattices of ultracold atoms were replaced with semiconductor heterostructures. As a result of this work, a new resonance Bragg polariton structure supporting the hyperbolic dispersion of exciton-polaritons was proposed. The “slow” light and negative refraction in this structure were predicted. A method for controlling the group velocity and the angle of refraction of light by an external electric field was suggested.

A significant part of the research of Dr. Sedov is devoted to spin-orbital effects in polaritonic structures. Spin dynamics of long-living exciton-polaritons in a wedged microcavity in the presence of “artificial gravity” was studied. The self-interference effect of polaritons was predicted. The magnetic field control of spin dynamics was studied both theoretically and experimentally, and the suppression of spin oscillations was demonstrated. The amazing effect of the zitterbewegung, which is the trembling of a classical trajectory of a particle under its spin precession, was predicted theoretically. A new all-optical polariton device, polariton polarization rectifier intended to transform polariton pulses with a given polarization to linearly polarized pulses was proposed.

Dr. Sedov provides support by developing a theoretical justification and performing numerical simulations to experimental research of overseas collaborators. Among such research are creation and control of persistent currents of exciton polaritons confined in cylindrical micropillars, control of transport and spin-valley polarization properties of polaritons in transition metal dichalcogenide monolayers embedded in optical microcavities, superconductivity is mixed Bose-Fermi systems.

Representative Publications

1. C. Rupprecht, E. Sedov, M. Klaas, H. Knopf, M. Blei, N. Lundt, S. Tongay, T. Taniguchi, K. Watanabe, U. Schulz, A. Kavokin, F. Eilenberger, S. Höfling, C. Schneider, “Manipulation of room-temperature Valley-Coherent Exciton Polaritons in atomically thin crystals by real and artificial magnetic fields”, accepted in 2D Materials (2020).

2. E. Sedov, I. Sedova, S. Arakelian, G. Eramo, and A. Kavokin, “Hybrid optical fiber for light-induced superconductivity”, accepted in Scientific Reports (2020).

3. E. Sedov, V. Lukoshkin, V. Kalevich, Z. Hatzopoulos, P. Savvidis, A. Kavokin, “Persistent currents in half-moon polariton condensates”, accepted in ACS Photonics (2020). https://doi.org/10.1021/acsphotonics.9b01779

4. D. Caputo, E. S. Sedov, D. Ballarini, M. M. Glazov, A. K. Kavokin, and D. Sanvitto, “Magnetic control of polariton spin transport”, Communications Physics 2, 165 (2019). http://doi.org/10.1038/s42005-019-0261-2

5. E. S. Sedov, Y. G. Rubo, A. V. Kavokin, “Polariton polarization rectifier”, Light: Science & Applications 8, 79 (2019). https://doi.org/10.1038/s41565-019-0492-0

6. N. Lundt, Ł. Dusanowski, E. Sedov, P. Stepanov, M. M. Glazov, S. Klembt, M. Klaas, J. Beierlein, Y. Qin, S. Tongay, M. Richard, A. V. Kavokin, S. Höfling and C. Schneider, “Optical valley Hall effect for highly valley-coherent exciton-polaritons in an atomically thin semiconductor”, Nature Nanotechnology 14, 770-775 (2019). https://doi.org/10.1038/s41565-019-0492-0

7. D. Schmidt, B. Berger, M. Kahlert, M. Bayer, C. Schneider, S. Höfling, E. S. Sedov, A. V. Kavokin, and M. Aßmann, “Tracking Dark Excitons with Exciton Polaritons in Semiconductor Microcavities”, Phys. Rev. Lett. 122, 047403 (2019). https://doi.org/10.1103/PhysRevLett.122.047403

8. E.S. Sedov, Y.G. Rubo, A. V. Kavokin, “Zitterbewegung of exciton-polaritons”, Phys. Rev. B 97, 245312 (2018). https://doi.org/10.1103/PhysRevB.97.245312

9. E. S. Sedov and A. V Kavokin, “Artificial gravity effect on spin-polarized exciton-polaritons”, Scientific Reports 7, 9797 (2017). https://doi.org/10.1038/s41598-017-10137-z

10. E.S. Sedov, I. V. Iorsh, S. M. Arakelian, A. P. Alodjants, and Alexey Kavokin, “Hyperbolic Metamaterials with Bragg Polaritons”, Phys. Rev. Lett. 114, 237402 (2015). https://doi.org/10.1103/PhysRevLett.114.237402

Contact Information

Email: evgenysedov@westlake.edu.cn