Results 71 to 80 of about 12,012,323 (242)

A new SSI algorithm for LPTV systems: Application to a hinged-bladed helicopter [PDF]

open access: yes, 2014
Many systems such as turbo-generators, wind turbines and helicopters show intrinsic time-periodic behaviors. Usually, these structures are considered to be faithfully modeled as linear time-invariant (LTI).
Jhinaoui, Ahmed   +2 more
core   +1 more source

Nonequilibrium steady states in the Floquet-Lindblad systems: van Vleck's high-frequency expansion approach

open access: yesSciPost Physics Core, 2021
Nonequilibrium steady states (NESSs) in periodically driven dissipative quantum systems are vital in Floquet engineering. We develop a general theory for high-frequency drives with Lindblad-type dissipation to characterize and analyze NESSs.
Tatsuhiko N. Ikeda, Koki Chinzei, Masahiro Sato
doaj   +1 more source

Dynamics of a two-level system under strong driving: Quantum-gate optimization based on Floquet theory [PDF]

open access: yes, 2016
We consider the dynamics of a two-level system (qubit) driven by strong and short resonant pulses in the framework of Floquet theory. First we derive analytical expressions for the quasienergies and Floquet states of the driven system.
Chunqing Deng   +3 more
semanticscholar   +1 more source

Transparent Topological Meta‐Diplexer via Tightly Confined Valley Surface States

open access: yesAdvanced Science, EarlyView.
An optically transparent topological metasurface supporting tightly confined valley surface states enables robust and flexible wave routing in an ultrathin platform. A compact transparent meta‐diplexer with spatially and spectrally separated channels is realized, while communication experiments verify high‐fidelity signal transmission, opening new ...
Sijie Li   +5 more
wiley   +1 more source

Non-equilibrium aspects of topological Floquet quantum systems [PDF]

open access: yes, 2017
The manifestations of topology are ubiquitous in condensed matter physics. One of the most striking examples is the integer quantum Hall effect, which served as a theoretical basis for developing many classes of new materials in the last years such as ...
Privitera, Lorenzo
core  

Liaison et impression : phonologie populaire à travers les intuitions de deux groupes d’adolescents francophones

open access: yes, 2023
The aim of this work is to comment on the results of an acceptability test administered to a population of young middle school students. Continuing work already started on the perception of liaison and subjective representations (Laks & Floquet 2017;
BOUTIN, BEATRICE AKISSI   +2 more
core   +1 more source

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

open access: yesPhysical 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   +2 more
doaj   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

open access: yesAdvanced 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   +4 more
wiley   +1 more source

Η θεωρία του Floquet για γραμμικά συστήματα συνήθων διαφορικών εξισώσεων με εφαρμογές

open access: yes, 2022
Σε αυτή την πτυχιακή εργασία, παρουσιάζουμε τη Θεωρία του Floquet η οποία αποτελεί μια αποτελεσματική μέθοδο επίλυσης συστημάτων διαφορικών εξισώσεων πρώτης τάξης με περιοδικούς συντελεστές.
Θεολόγου, Γεώργιος
core  

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

open access: yesPhotonics
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   +2 more
doaj   +1 more source

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