Results 71 to 80 of about 4,510 (212)

Revealing the Resonant Physics of Open Photonic Time Crystals

open access: yesLaser &Photonics Reviews, EarlyView.
ABSTRACT Photonic time crystals (PTCs) are media whose permittivity is modulated periodically in time, enabling momentum bandgaps and parametric amplification of light. Their realization at the nanoscale can revolutionize the study of light‐matter interactions.
Adrià Canós Valero   +5 more
wiley   +1 more source

How Circular Dichroism in Time- and Angle-Resolved Photoemission Can Be Used to Spectroscopically Detect Transient Topological States in Graphene

open access: yesPhysical Review X, 2020
Pumping graphene with circularly polarized light is the archetype of light-tailoring topological bands. Realizing the induced Floquet-Chern-insulator state and demonstrating clear experimental evidence for its topological nature has been a challenge, and
Michael Schüler   +6 more
doaj   +1 more source

Photonic Doping of Epsilon‐Near‐Zero Bragg Microcavities

open access: yesNanophotonics, Volume 15, Issue 13, 13 July 2026.
Photonic doping of an epsilon‐near‐zero (ENZ) Bragg microcavity at optical frequencies induces strong magnetic responses from dielectric inclusions, enabling intense field localization, Purcell enhancement, and tunable hybrid Bragg–Mie modes. The platform supports perfect magnetic conductor and epsilon‐and‐mu‐near‐zero regimes, offering opportunities ...
Ali Panahpour   +2 more
wiley   +1 more source

Floquet-Drude conductivity

open access: yes, 2020
A generalization of the Drude conductivity for systems which are exposed to periodic driving is presented. The probe bias is treated perturbatively by using the Kubo formula, whereas the external driving is included nonperturbatively using the Floquet ...
Wenk, Paul   +2 more
core   +1 more source

Wavelength and Polarization Multiplexed Nonlocal Metasurface for Quantitative Phase Microscopy

open access: yesNanophotonics, Volume 15, Issue 13, 13 July 2026.
A nonlocal metasurface with wavelength and polarization multiplexed optical transfer functions is demonstrated for performing quantitative phase imaging. The metasurface uses the angular dispersion of optical routing guided mode resonances to extract phase gradient information along different directions for phase retrieval. ABSTRACT Imaging transparent
Haiwei Wang   +8 more
wiley   +1 more source

Non-adiabatic topological spin pumping

open access: yesNew Journal of Physics, 2015
Based on the Floquet scattering theory, we analytically investigate the topological spin pumping for an exactly solvable model. Floquet spin Chern numbers are introduced to characterize the periodically time-dependent system. The topological spin pumping
W Y Deng   +5 more
doaj   +1 more source

On Moderate-Rayleigh-Number Convection in an Inclined Porous Layer

open access: yesFluids, 2019
We investigate the flow structure and dynamics of moderate-Rayleigh-number ( R a ) thermal convection in a two-dimensional inclined ...
Baole Wen, Gregory P. Chini
doaj   +1 more source

Quantum Dynamics Simulations of Polariton Transport in a Bloch Surface Wave Cavity

open access: yesNanophotonics, Volume 15, Issue 12, 25 June 2026.
Polariton Transport Quantum Dynamics for molecules (purple dots) collectively coupled to a Bloch Surface Wave Cavity. Lower panels show the polariton dispersion relation. ABSTRACT Coupling excitons to quantized cavity photonic modes can significantly enhance the spatial and temporal range of excitonic transport.
Santanu Poddar, Pengfei Huo
wiley   +1 more source

Canonical Floquet Theory II: Action-Angle Variables Near Conservative Periodic Orbits

open access: yes, 2021
Classical Floquet theory describes motion near a periodic orbit. But comparing Floquet theory to action angle methods shows which Jordan form is desirable.
Wiesel, William E.
core   +1 more source

Magnetically Reconfigurable Mode Strong Coupling Toward Tunable Nanophotonic Sensing Devices

open access: yesNanophotonics, Volume 15, Issue 12, 25 June 2026.
A magnetically reconfigurable metasurface realizes tunable strong coupling between structural and magneto‐structurally induced q‐BIC resonances without changing device geometry. The resulting hybrid branches enable high‐sensitivity refractive‐index sensing with noncontact active control, large figure of merit, and multiple resonance observables ...
Runmin Liu   +5 more
wiley   +1 more source

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