Zobrazeno 1 - 10
of 40
pro vyhledávání: '"S. A. R. Horsley"'
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-7 (2023)
Abstract We experimentally demonstrate a Purcell effect-based design technique for improved impedance matching, and thus enhanced the reflection coefficient from a small microwave emitter. Using an iterative process centred on comparing the phase of
Externí odkaz:
https://doaj.org/article/0d085346d0e24bbdbfd116a096718100
Publikováno v:
Physical Review A. 106
Utilising the fact that the frequency response of a material can be decomposed into the quasi-normal modes supported by the system, we present two methods to directly manipulate the complex frequencies of quasi-normal modes in the complex plane. We f
Spin precession in magnetic materials is commonly modelled with the classical phenomenological Landau-Lifshitz-Gilbert (LLG) equation. Based on a quantized spin+environment Hamiltonian, we here derive a general spin operator equation of motion that d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae77b6ab2389645f1f84742dab1bd13e
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/59440
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/59440
We develop a compact theory that can be applied to a variety of time-varying dispersive materials. The continuous wave reflection and transmission coefficients are replaced with equivalent operator expressions. In addition to comparing this approach
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::226728235a27de08b0b642d4a6cf6e64
Publikováno v:
New Journal of Physics. 24:113035
The ability to design passive structures that perform different operations on different electromagnetic fields is key to many technologies, from beam-steering to optical computing. While many techniques have been developed to optimise structures to a
Autor:
S. A. R. Horsley
Publikováno v:
2021 Fifteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials).
In this talk I show how to find materials supporting topological edge states through extending the concept of the refractive index. Rather than compute a topological invariant, we compute the refractive index as a function of propagation direction, f
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-12 (2019)
Graphene, despite its centrosymmetric structure, is predicted to have a substantial second order nonlinearity, arising from non-local effects. However, there is disagreement between several published theories and experimental data. Here we derive an
Autor:
S. Mignuzzi, J. Cambiasso, S. Vezzoli, S. A. R. Horsley, W. L. Barnes, S. A. Maier, R. Sapienza
Publikováno v:
Conference on Lasers and Electro-Optics.
Publikováno v:
Scientific Reports
Graphene, despite its centrosymmetric structure, is predicted to have a substantial second order nonlinearity, arising from non-local effects. However, there is disagreement between several published theories and experimental data. Here we derive an
Autor:
S. A. R. Horsley
There is a well explored relationship between quantum mechanical scattering from a potential and the Korteweg-de Vries (KdV) equation of fluid dynamics: if the potential is 'evolved' according to the KdV equation then it will have the same reflectivi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eca9342f4f5bbc23d1f388056f336d60