168 citations · 625 across the 15 of their papers we have counts for
15 papers
Bogoliubov excitations of a Bose-Einstein condensate in the presence of the non-Hermitian skin effect
Carlo Panu, Ulf Peschel, Oleg A. Egorov +2
The non-Hermitian skin effect is one of the most remarkable topological features of non-conservative physics. It causes a macroscopic accumulation of states at the boundaries of a…
Probing Local Topology in a Disordered Higher-Order Topological Insulator
Johannes Düreth, Simon Widmann, Philipp Gagel +13
Higher-order topology is prized for its ability to realize lower-dimensional boundary states which are stable beyond fine-tuning. However, disorder presents a failure mechanism tha…
Hybrid confinement techniques for polariton simulators
Johannes Düreth, Philipp Gagel, David Laibacher +13
Exciton-polariton III-V semiconductor microcavities provide a robust platform for emulating complex Hamiltonians, enabling topological photonics and quantum simulation for advanced…
Topologically tunable polaritons based on two-dimensional crystals in a photonic lattice
Lukas Lackner, Oleg A. Egorov, Anthony Ernzerhof +8
Topological photonics is an emergent research discipline which interlinks fundamental aspects of photonics, information processing and solid-state physics. Exciton-polaritons are a…
Topological Optical Waveguiding of Exciton-Polariton Condensates
Johannes Beierlein, Oleg A. Egorov, Philipp Gagel +9
One-dimensional models with topological non-trivial band structures are a simple and effective way to study novel and exciting concepts in topological photonics. In this work we ar…
An electrically pumped topological polariton laser
Philipp Gagel, Oleg A. Egorov, Franciszek Dzimira +9
With a seminal work of Raghu and Haldane in 2008, concepts of topology have been successfully introduced in a wide range of optical systems, emulating specific lattice Hamiltonians…
Transition from propagating polariton solitons to a standing wave condensate induced by interactions
M. Sich, J. K. Chana, O. A. Egorov +8
We explore nonlinear transitions of polariton wavepackets, first, to a soliton and then to a standing wave polariton condensate in a multi-mode microwire system. At low polariton d…
Nonlinear Bloch-waves and current states of exciton-polariton condensates
I. Yu. Chestnov, A. V. Yulin, A. P. Alodjants +1
The formation of nonlinear Bloch states in open driven-dissipative system of exciton-polaritons loaded into a weak-contrast 1D periodic lattice is studied numerically and analytica…
Collective state transitions of exciton-polaritons loaded into a periodic potential
K. Winkler, O. A. Egorov, I. G. Savenko +9
We study the loading of a nonequilibrium, dissipative system of composite bosons -- exciton polaritons -- into a one dimensional periodic lattice potential. Utilizing momentum reso…
Oscillatory dynamics of non-equilibrium dissipative exciton-polariton condensates in weak-contrast lattices
X. Ma, I. Yu. Chestnov, M. V. Charukhchyan +2
We study nonlinear dynamics of exciton-polaritons in an incoherently pumped semiconductor microcavity with embedded weak-contrast lattice and coupled to an exciton reservoir. We el…
Incoherent excitation and switching of spin states in exciton-polariton condensates
G. Li, T. C. H. Liew, O. A. Egorov +1
We investigate, theoretically and numerically, the spin dynamics of a two-component exciton-polariton condensate created and sustained by non-resonant spin-polarized optical pumpin…
Information processing with topologically protected vortex memories in exciton-polariton condensates
H. Sigurdsson, O. A. Egorov, X. Ma +2
We show that in a non-equilibrium system of an exciton-polariton condensate, where polaritons are generated from incoherent pumping, a ring-shaped pump allows for stationary vortex…
Bistability in Microcavities with Incoherent Optical or Electrical Excitation
O. Kyriienko, T. C. H. Liew, E. A. Ostrovskaya +2
We consider a quantum well embedded in a zero-dimensional microcavity with a sub-wavelength grated mirror, where the x-linearly polarized exciton mode is strongly coupled to the ca…
Bright cavity polariton solitons
O. A. Egorov, D. V. Skryabin, A. V. Yulin +1
The lower branch of the dispersion relation of exciton polaritons in semiconductor microcavities, operating in the strong-coupling regime, contains sections of both positive and ne…
Dark polariton-solitons in semiconductor microcavities
A. V. Yulin, O. A. Egorov, F. Lederer +1
We report the existence, symmetry breaking and other instabilities of dark polariton-solitons in semiconductor microcavities operating in the strong coupling regime. These half-lig…