Results 71 to 80 of about 6,496,471 (236)

Radiation-induced dynamical formation of Floquet-Bloch bands in Dirac Hamiltonians

New Journal of Physics
Recent experiments, combing ultrafast strong-field irradiation of surfaces with time- and angle-resolved photoemission spectroscopy, allow for monitoring the time-dependent charge carrier dynamics and the build-up of transient sidebands due to the ...
Yuriko Baba, Vanessa Junk, Wolfgang Hogger, Francisco Domínguez-Adame, Rafael A Molina, Klaus Richter   +5 more
doaj   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

Advanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source

Observation of Linear and Nonlinear Light Trapping on Topological Dislocations

Laser &Photonics Reviews, EarlyView.
Topological dislocations are global lattice defects found in various systems ranging from crystals to photonic lattices. This work reports the first observation at optical frequencies of linear modes with tunable localization bound to edge dislocations and their nonlinear counterparts ‐ dislocation solitons. These results reveal an intriguing interplay
S. K. Ivanov, A. V. Kireev, K. Sabour, N. S. Kostyuchenko, S. A. Zhuravitskii, N. N. Skryabin, I. V. Dyakonov, A. A. Kalinkin, V. O. Kompanets, S. P. Kulik, S. V. Chekalin, A. Ferrando, V. N. Zadkov, Y. V. Kartashov   +13 more
wiley   +1 more source

Stability of PT and anti-PT-symmetric Hamiltonians with multiple harmonics

Physical Review Research
Hermitian Hamiltonians with time-periodic coefficients can be analyzed via Floquet theory, and have been extensively used for engineering Floquet Hamiltonians in standard quantum simulators.
Julia Cen, Yogesh N. Joglekar, Avadh Saxena   +2 more
doaj   +1 more source

Selection Rules of Linear and Nonlinear Polarization-Selective Absorption in Optically Dressed Matter

Photonics
Dynamical symmetries of laser-dressed matter determine the selection rules that influence its absorption spectrum. We explore selection rules for polarization-sensitive absorption in Floquet matter, using Floquet group theory in synthetic dimensions.
Michael Feldman, Matan Even Tzur, Oren Cohen   +2 more
doaj   +1 more source

Chaos and Stability of Spur Gear Transmission System for Locomotive Based on Energy Method and Floquet Theory

Shock and Vibration, 2018
Considering the internal and external excitations such as time-varying mesh stiffness (TVMS), backlash, transmission error, torque of the traction motor, and load torque of the wheel/rail, a lumped mass model of the spur gear drive system for a railway ...
Junguo Wang, Bo Lv, Y. Zhao
semanticscholar   +1 more source

Engineering Topological Phases with a Traveling‐Wave Spacetime Modulation

Laser &Photonics Reviews, Volume 20, Issue 7, 6 April 2026.
Time‐varying systems have garnered considerable attention due to their unique potential in manipulating electromagnetic waves. Here, a novel class of topological spacetime crystals with a traveling‐wave modulation is introduced. By manipulating material anisotropy, one can engineer light angular momentum and non‐trivial topological phases characterized
João C. Serra, Mário G. Silveirinha
wiley   +1 more source

Floquet scattering in parametric electron pumps

, 2002
A Floquet scattering approach to parametric electron pumps is presented and compared with Brouwer's adiabatic scattering approach [Phys. Rev. B 58, R10135 (1998)] for a simple scattering model with two harmonically oscillating delta-function barriers ...
A. Emmanouilidou, B.L. Altshuler, D.F. Martinez, D.J. Thouless, E.P. Wigner, F. Smith, F. Zhou, G.B. Lubkin, H. Sambe, J.E. Avron, L.P. Kouwenhoven, M. Büttiker, M. Henseler, M. Switkes, M. Wagner, M.V. Berry, O. Entin-Wohlman, O. Entin-Wohlman, P.F. Bagwell, P.W. Brouwer, S. Datta, S.-L. Zhu, Sang Wook Kim, V.I. Talyanskii, W. Li, Y. Wei, Y.V. Fyodorov   +26 more
core   +1 more source

Quantum Control of the Dynamical Behavior of Resonance States in Small Organic Molecules With Intense Fields

Small Structures, Volume 7, Issue 4, April 2026.
A new quantum control scheme is suggested to modify the final fragment distribution produced upon decay of a resonance state of CH3. The scheme applies a moderately intense control field that in the Floquet representation causes a shift of the ground state upwards, producing new nonadiabatic couplings with the excited states that reshape the potential ...
Alberto García‐Vela
wiley   +1 more source

Photo-Ionization of Noble Gases: A Demonstration of Hybrid Coupled Channels Approach

Photonics, 2015
We present here an application of the recently developed hybrid coupled channels approach to study photo-ionization of noble gas atoms: Neon and Argon. We first compute multi-photon ionization rates and cross-sections for these inert gas atoms with our ...
Vinay Pramod Majety, Armin Scrinzi
doaj   +1 more source