Zobrazeno 1 - 10
of 158
pro vyhledávání: '"A. A. Zyablovsky"'
Autor:
E. A. Tereshchenkov, E. S. Andrianov, A. A. Zyablovsky, A. A. Pukhov, A. P. Vinogradov, A. A. Lisyansky
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-14 (2022)
Abstract We report on unusual regimes of operation of a laser with a gain medium with a large Raman scattering cross-section, which is often inherent in new types of gain media such as colloidal and epitaxial quantum dots and perovskite materials. Th
Externí odkaz:
https://doaj.org/article/bad7fec0f0b74632b74cc1b0897bcc82
Autor:
T. T. Sergeev, A. A. Zyablovsky, E. S. Andrianov, A. A. Pukhov, Yu. E. Lozovik, A. P. Vinogradov
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
Abstract We demonstrate a new type of non-Hermitian phase transition in open systems far from thermal equilibrium, which can have place in the absence of an exceptional point. This transition takes place in coupled systems interacting with reservoirs
Externí odkaz:
https://doaj.org/article/5efc97f62b2044a0b71d9b1338ccb3a7
In this letter, we consider a composite atom-cavity system interacting with a ring resonator. In such a system, time crystal regime can be observed. We show that this regime can lead to a quadratic observation time dependence of the system's sensitiv
Externí odkaz:
http://arxiv.org/abs/2411.13313
Publikováno v:
Quantum, Vol 7, p 982 (2023)
Exceptional point (EP) is a spectral singularity in non-Hermitian systems. The passing over the EP leads to a phase transition, which endows the system with unconventional features that find a wide range of applications. However, the need of using th
Externí odkaz:
https://doaj.org/article/3d7e3b75e3b04b19a05299e6279aa7c6
Spontaneous symmetry breaking is a phenomenon of an alteration of a state symmetry without a change in the system symmetry. A transition from a state with unbroken symmetry to a state with broken symmetry leads to a qualitative change in system prope
Externí odkaz:
http://arxiv.org/abs/2408.04881
A phonon laser is an important device that can generate coherent sound waves at gigahertz frequency. In this paper, we demonstrate that in a phonon laser, the radiation line width can depend on the pumping non-monotonically. This is because there are
Externí odkaz:
http://arxiv.org/abs/2407.20757
It is known that the spontaneous time translation symmetry breaking can occur in systems periodically driven at a certain period. We predict a spontaneous breaking of time translation symmetry in an atom-cavity system without external driving, in whi
Externí odkaz:
http://arxiv.org/abs/2401.08824
The dynamics of open quantum systems connected with several reservoirs attract great attention due to its importance in quantum optics, biology, quantum thermodynamics, transport phenomena, etc. In many problems, the Born approximation is applicable
Externí odkaz:
http://arxiv.org/abs/2312.12212
The emission linewidth in active medium emerges due to homogeneous and inhomogeneous broadening. We demonstrate that in lasers with inhomogeneous broadening there is a critical pump rate, above which the special mode forms. This mode consists of lock
Externí odkaz:
http://arxiv.org/abs/2312.03890
System with strong photon-phonon interaction and optomechanical instability are perspective for generation of coherent phonons and photons. Typically, above the threshold of optomechanical instability, the photon intensity increases linearly with pum
Externí odkaz:
http://arxiv.org/abs/2310.18501