oleglychkovskiy

Oleg Lychkovskiy

Professor: Boris Fine

Oleg graduated from the Moscow Institute of Physics and Technology in 2006, and received Candidate of Sciences (PhD) degree from the Institute for Theoretical and Experimental Physics in 2009.  His early research activities, including his postgraduate studies, were devoted to the theoretical physics of elementary particles and fields and astroparticle physics.  In 2012, he moved to the Lancaster University, UK, to work as a Senior Research Associate on the far-from-equilibrium quantum dynamics of an impurity particle in a one-dimensional quantum fluid. In 2014, he moved back to Moscow to work for the Russian Quantum Center as a member of the Many-body Theory Group. In 2016, he got involved in a project aimed at the development of the Quantum Key Distribution system, a joint venture of a consortium of companies and research centers, including the Russian Quantum Center, DePhAn LLC and Steklov Mathematical Institute. In 2017 he moved to Skoltech to work on quantum many-body theory. In June 2017 his project “Quantum adiabaticity in many-body systems” was supported by a 3-year grant of the Russian Science Foundation. In October 2018 he acquired a 2-year grant from the Russian Foundation for Basic Research to develop a project “Far-from-equilibrium dynamics in quantum impurity models”.

Topics

  • Quantum adiabaticity in many-body systems
  • Quantum dynamics in many-body systems
  • Thermalization of quantum systems
  • Quantum computing
  • Decoherence and quantum-to-classical transition
  • High-temperature superconductors

 

Selected talks

Quantum adiabaticity in many-body systems at  DICE-2018

Quench and adiabatic dynamics of a mobile impurity in a one-dimensional quantum fluid at  University of Geneva

 

For a complete list of publications see Google Scholar profile

Selected papers:

Oleg Lychkovskiy. Non-diagonal problem Hamiltonian for adiabatic quantum computation. arXiv 1811.09453.

V. V. Vyborova, O. Lychkovskiy, A. N. Rubtsov. Droplet formation in a one-dimensional system of attractive spinless fermions.  Phys. Rev. B 98, 235407 (2018).

Oleg Lychkovskiy, Boris V. Fine. Spin excitation spectrum of high-temperature cuprate superconductors from finite cluster simulations. J. Phys.: Condens. Matter 30, 405801 (2018).

Oleksandr Gamayun, Oleg Lychkovskiy, Evgeni Burovski, Matthew Malcomson, Vadim V. Cheianov, Mikhail B. Zvonarev. Impact of the injection protocol on an impurity’s stationary state. Phys. Rev. Lett. 120, 220605 (2018).

Oleg Lychkovskiy, Oleksandr Gamayun, Vadim Cheianov. Necessary and sufficient condition for quantum adiabaticity in a driven one-dimensional impurity-fluid system. Phys. Rev. B 98, 024307 (2018).

Nikolay Il’in, Elena Shpagina, Filipp Uskov, Oleg Lychkovskiy. Squaring parametrization of constrained and unconstrained sets of quantum states. J. Phys. A: Math. Theor. 51, 085301 (2018).

Oleg Lychkovskiy. Decoherence at the level of eigenstates. arXiv 1712.04384.

Oleg Lychkovskiy, Oleksandr Gamayun, Vadim Cheianov. Time scale for adiabaticity breakdown in driven many-body systems and orthogonality catastrophe. Phys. Rev. Lett. 119, 200401 (2017).

O. Lychkovskiy. Large quantum superpositions of a nanoparticle immersed in superfluid helium. Phys. Rev. B 93, 214517 (2016).

O. Lychkovskiy. Perpetual motion and driven dynamics of a mobile impurity in a quantum fluid. Phys. Rev. A 91, 040101 (Rapid Communications) (2015).

O. Gamayun, O. Lychkovskiy, and V. Cheianov. Kinetic theory for a mobile impurity in a degenerate Tonks-Girardeau gas. Phys. Rev. E 90, 032132 (2014).

E. Burovski, V. Cheianov, O. Gamayun, and O. Lychkovskiy. Momentum relaxation of a mobile impurity in a one-dimensional quantum gas. Phys. Rev. A 89, 041601 (Rapid Communications) (2014).

O. Lychkovskiy. Dependence of decoherence-assisted classicality on the way a system is partitioned into subsystems. Phys. Rev. A 87, 022112 (2013).

O. Lychkovskiy. Necessary condition for the thermalization of a quantum system coupled to a quantum bath. Phys. Rev. E 82, 011123 (2010).