Zobrazeno 1 - 10
of 189
pro vyhledávání: '"Zezyulin, Dmitry A."'
Publikováno v:
Phys. Rev. A 110, L021304 (2024)
We study quantum droplets emerging in a quasi-one-dimensional asymmetric mixture of two atomic species with different intra-component coupling constants. We find that such mixtures support a rich variety of multipole quantum droplets, where the macro
Externí odkaz:
http://arxiv.org/abs/2408.09979
Publikováno v:
Chaos, Solitons & Fractals 182, 114838 (2024)
We predict that one- and two-dimensional self-bound quantum droplets, forming in Bose-Einstein condensates in the presence of Lee-Huang-Yang (LHY) quantum corrections to the mean-field energy, may demonstrate exceptional mobility in periodic optical
Externí odkaz:
http://arxiv.org/abs/2404.03573
Autor:
Zezyulin, Dmitry A.
Publikováno v:
Physical Review A 109, 043510 (2024)
We introduce a class of one-dimensional complex optical potentials that feature a nonlinearity-induced stability restoration, i.e., the existence of stable nonlinear modes propagating in a waveguide whose linear eigenmodes are unstable. The optical p
Externí odkaz:
http://arxiv.org/abs/2403.12810
Publikováno v:
Phys. Rev. B 109, 085304 (2024)
We present a theoretical study of an exciton-polariton annular microcavity with an additional quasiperiodic structure along the ring which is implemented in the form of a bicosine dependence. We demonstrate that for a sufficiently strong quasiperiodi
Externí odkaz:
http://arxiv.org/abs/2401.15396
Autor:
Zezyulin, Dmitry A.
Publikováno v:
Opt. Lett. 48(18), 4773-4776 (2023)
We show that surface solitons form continuous families in one-dimensional complex optical potentials of a certain shape. This result is illustrated by non-Hermitian gap-surface solitons at the interface between a uniform conservative medium and a com
Externí odkaz:
http://arxiv.org/abs/2308.13805
Autor:
Zezyulin, Dmitry A.
Publikováno v:
Phys. Rev. A 107, 043307 (2023)
We theoretically consider effectively one-dimensional quantum droplets in a symmetric Bose-Bose mixture confined in a parabolic trap. We systematically investigate ground and excited families of localized trapped modes which bifurcate from eigenstate
Externí odkaz:
http://arxiv.org/abs/2302.07707
Autor:
Zezyulin, Dmitry A., Shelykh, Ivan A.
Publikováno v:
Phys. Rev. B 107, 205303 (2023)
We construct a general theory of adiabatic propagation of spinor exciton-polaritons in waveguides of arbitrary shape, accounting for the effects of TE-TM splitting in linear polarizations and Zeeman splitting in circular polarizations. The developed
Externí odkaz:
http://arxiv.org/abs/2301.03337
Autor:
Zezyulin, Dmitry A.
Publikováno v:
Phys. Rev. E 106, 054209 (2022)
Complex Wadati-type potentials of the form $V(x)=-w^2(x) + iw_x(x)$, where $w(x)$ is a real-valued function, are known to possess a number of intriguing features, unusual for generic non-Hermitian potentials. In the present work, we introduce a class
Externí odkaz:
http://arxiv.org/abs/2210.15552
Bose-Einstein condensates loaded in one-dimensional bichromatic optical lattices with constituent sublattices having incommensurate periods is considered. Using the rational approximations for the incommensurate periods, we show that below the mobili
Externí odkaz:
http://arxiv.org/abs/2208.10376
Publikováno v:
Physical Review A 105, 063323 (2022)
We consider a particle governed by a one-dimensional Hamiltonian in which artificial periodic spin-orbit coupling and Zeeman lattice have incommensurate periods. Using best rational approximations to such quasiperiodic Hamiltonian, the problem is red
Externí odkaz:
http://arxiv.org/abs/2206.03412