Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Jenkins, Stewart D."'
Publikováno v:
Scientific Reports 9 (2019) 5707
Systems of closely-spaced resonators can be strongly coupled by interactions mediated by scattered electromagnetic fields. In large systems the resulting response has been shown to be more sensitive to these collective interactions than to the detail
Externí odkaz:
http://arxiv.org/abs/1904.03935
Autor:
Papasimakis, Nikitas, Jenkins, Stewart D., Savo, Salvatore, Zheludev, Nikolay I., Ruostekoski, Janne
Publikováno v:
Phys. Rev. B 99, 014210 (2019)
We investigate numerically and experimentally the near-field response of disordered arrays comprising asymmetrically split ring resonators that exhibit strong cooperative response. Our simulations treat the unit cell split ring resonators as discrete
Externí odkaz:
http://arxiv.org/abs/1902.00218
Autor:
Jenkins, Stewart D., Papasimakis, Nikitas, Savo, Salvatore, Zheludev, Nikolay I., Ruostekoski, Janne
Publikováno v:
Phys. Rev. B 98, 245136 (2018)
We provide detailed comparisons between experimental findings and numerical simulations of large cooperatively interacting, spatially disordered metamaterial arrays, consisting of asymmetrically split rings. Simulation methods fully incorporate stron
Externí odkaz:
http://arxiv.org/abs/1812.10452
Publikováno v:
Phys. Rev. B 96, 035403 (2017)
We develop a theoretical formalism for collectively responding point scatterers where the radiating electromagnetic fields from each emitter are considered in the electric dipole, magnetic dipole, and electric quadrupole approximation. The contributi
Externí odkaz:
http://arxiv.org/abs/1704.01160
Publikováno v:
Phys. Rev. A 96, 023855 (2017)
We study the collective optical response of an atomic ensemble confined within a single-mode optical cavity by stochastic electrodynamics simulations that include the effects of atomic position correlations, internal level structure, and spatial vari
Externí odkaz:
http://arxiv.org/abs/1703.00784
Autor:
Jenkins, Stewart D., Ruostekoski, Janne, Papasimakis, Nikitas, Savo, Salvatore, Zheludev, Nikolay I.
Publikováno v:
Phys. Rev. Lett. 119, 053901 (2017)
Subradiant excitations, originally predicted by Dicke, have posed a long-standing challenge in physics owing to their weak radiative coupling to environment. Here we engineer massive subradiance in planar metamaterial arrays as a spatially extended e
Externí odkaz:
http://arxiv.org/abs/1611.01509
Publikováno v:
Phys. Rev. A 93, 063803 (2016)
We derive equations for the strongly coupled system of light and dense atomic ensembles. The formalism includes an arbitrary internal level structure for the atoms and is not restricted to weak excitation of atoms by light. In the low light intensity
Externí odkaz:
http://arxiv.org/abs/1606.01864
Autor:
Watson, Derek W., Jenkins, Stewart D., Ruostekoski, Janne, Fedotov, Vassili A., Zheludev, Nikolay I.
Publikováno v:
Phys. Rev. B 93, 125420 (2016)
We show how the elusive toroidal dipole moment appears as a radiative excitation eigenmode in a metamolecule resonator that is formed by pairs of plasmonic nanorods. We analyze one such nanorod configuration - a toroidal metamolecule. We find that th
Externí odkaz:
http://arxiv.org/abs/1510.05609
Publikováno v:
Phys. Rev. Lett. 111, 147401 (2013)
We propose a cooperative asymmetry-induced transparency, CAIT, formed by collective excitations in metamaterial arrays of discrete resonators. CAIT can display a sharp transmission resonance even when the constituent resonators individually exhibit b
Externí odkaz:
http://arxiv.org/abs/1305.3808
Publikováno v:
Phys. Rev. B 86, 205128 (2012)
We examine the effect of inhomogeneous broadening on the collective response of a planar metamaterial consisting of asymmetric split ring resonators. We show that such a response leads to a transmission resonance that can persist when the broadening
Externí odkaz:
http://arxiv.org/abs/1209.6154