Zobrazeno 1 - 10
of 391
pro vyhledávání: '"Kottos, Tsampikos"'
Autor:
Erb, Jared, Shaibe, Nadav, Calvo, Robert, Lathrop, Daniel, Antonsen, Thomas, Kottos, Tsampikos, Anlage, Steven M.
The control of wave scattering in complex non-Hermitian settings is an exciting subject -- often challenging the creativity of researchers and stimulating the imagination of the public. Successful outcomes include invisibility cloaks, wavefront shapi
Externí odkaz:
http://arxiv.org/abs/2411.01069
There has recently been a growing effort to understand in a comprehensive manner the physics and intricate dynamics of many-body and many-state (multimode) interacting bosonic systems. For instance, in photonics, nonlinear multimode fibers are nowada
Externí odkaz:
http://arxiv.org/abs/2409.01422
A stationary inflection point (SIP) is a spectral singularity of the Bloch dispersion relation $\omega(k)$ of a periodic structure where the first and the second derivatives of $\omega$ with respect to $k$ vanish. An SIP is associated with a third or
Externí odkaz:
http://arxiv.org/abs/2405.09700
Damping typically results in attenuation of vibrations and elastic wave propagation in mechanical systems. Contrary to this conventional understanding, we demonstrate experimentally and explain theoretically the revival of an elastic wave transmitted
Externí odkaz:
http://arxiv.org/abs/2404.02979
We develop a Coherent Perfect Absorption (CPA) protocol for cases where scale invariance is violated due to the presence of nonlinear mechanisms. We demonstrate, using a microwave setting that lacks geometrical symmetries, that the nonlinearity offer
Externí odkaz:
http://arxiv.org/abs/2403.10690
We show that a single nonlinear defect can thermalize an initial excitation towards a Rayleigh-Jeans (RJ) state in complex multimoded systems. The thermalization can be hindered by disorder-induced localization phenomena which drive the system into a
Externí odkaz:
http://arxiv.org/abs/2402.18701
Autor:
Kurnosov, Arkady, Fernández-Alcázar, Lucas J., Ramos, Alba Y., Shapiro, Boris, Kottos, Tsampikos
Recent experimental developments in multimode nonlinear photonic circuits (MMNPC), have motivated the development of an optical thermodynamic theory that describes the equilibrium properties of an initial beam excitation. However, a non-equilibrium t
Externí odkaz:
http://arxiv.org/abs/2310.16784
Publikováno v:
Phys. Rev. Applied 22, 014010 (2024)
Bound states in the continuum (BICs) defy conventional wisdom that assumes a spectral separation between propagating waves, that carry energy away, and spatially localized waves corresponding to discrete frequencies. They can be described as resonanc
Externí odkaz:
http://arxiv.org/abs/2310.09682
Publikováno v:
Phys. Rev. B 109, 024312 (2024)
A stationary inflection point (SIP) in the Bloch dispersion relation of a periodic waveguide is an exceptional point degeneracy where three Bloch eigenmodes coalesce forming the so-called frozen mode with a divergent amplitude and vanishing group vel
Externí odkaz:
http://arxiv.org/abs/2307.13274
Exceptional point degeneracies (EPD) of linear non-Hermitian systems have been recently utilized for hypersensitive sensing. This proposal exploits the sublinear response that the degenerate frequencies experience once the system is externally pertur
Externí odkaz:
http://arxiv.org/abs/2303.10278