L. Martı́n-Moreno

Universidad de Zaragoza

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F. J. García‐Vidal

Universidad Autónoma de Madrid

162

Alexey Y. Nikitin

Ikerbasque

Sergio G. Rodrigo

Instituto de Nanociencia y Materiales de Aragón

C. Tejedor

Universidad Autónoma de Madrid

Esteban Moreno

Universidad Autónoma de Madrid

Thomas W. Ebbesen

Université de Strasbourg

Antonio I. Fernández‐Domínguez

Universidad Autónoma de Madrid

Jorge Bravo‐Abad

Universidad Autónoma de Madrid

Fernando de León‐Pérez

Instituto de Nanociencia y Materiales de Aragón

David Zueco

Instituto de Nanociencia y Materiales de Aragón

Cooperative Institutions

Centre National de la Recherche Scientifique

Universidad Autónoma de Madrid

Consejo Superior de Investigaciones Científicas

Universidad de Zaragoza

Moscow Institute of Physics and Technology

University of Cambridge

Instituto de Nanociencia y Materiales de Aragón

Seoul National University

École Polytechnique Fédérale de Lausanne

Instituto de Ciencia de Materiales de Madrid

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Giant Faraday rotation due to excitation of magnetoplasmons in graphene microribbons

arXiv (Cornell University) (2013)

Mykhailo Tymchenko Alexey Y. Nikitin L. Martín‐Moreno

A single graphene sheet, when subjected to a perpendicular static magnetic field provides Faraday rotation that, per atomic layer, greatly surpasses that of any other known material. This Giant Faraday rotation originates from the cyclotron resonance of massless electrons, which allows dynamical tuning through either external electrostatic or magnetostatic setting. Furthermore, the rotation direction can be controlled by changing the sign of the carriers in graphene, which can be done by means of an external electric field. However, despite these tuning possibilities, the requirement of large magnetic fields hinders application of the Faraday effect in real devices, especially for frequencies higher than few THz. In this work we demonstrate that, for a given value of the static external magnetic field, giant Faraday rotation can be achieved in arrays of graphene microribbons at frequencies much higher than the corresponding cyclotron frequency. The main feature in the magneto-optical response of graphene ribbons is not associated with the cyclotron resonance but rather with the fundamental magnetoplasmon excitation of a single ribbon. The magnetoplasmon nature of Faraday rotation in graphene ribbons opens great possibilities, as the resonance frequency can be locally selected by appropriately choosing the width of the ribbon while still preserving the tuning capability through a (smaller) external magnetic field.

Faraday cage

10.48550/arxiv.1306.6803

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Extraordinary Optical Transmittance through SiC –Ion Beam Processing for Surface Plasmonics,

Herman Högström Sima Valizadeh F. Vidal L. Martín‐Moreno Carl-Gustaf Ribbing

Extraordinary Optical Transmittance through SiC –Ion Beam Processing for Surface Plasmonics,

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Kondo effect for any spin and any number of electrons in quantum dots at high magnetic fields

arXiv (Cornell University) (2000)

C. Tejedor L. Martín‐Moreno

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Enhanced transmission of s-polarized light through a metal slit

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (2010)

Mickaël Guillaumée Alexey Y. Nikitin L. A. Dunbar Vladislav Spassov Mona Julia Katharina Klein

Enhanced optical transmission (EOT) through subwavelength apertures is usually obtained for p-polarized light. The present study experimentally investigates EOT for s-polarized light. A subwavelength slit surrounded on each side by periodic grooves has been fabricated in a gold film and covered by a thin dielectric layer. The excitation of s-polarized dielectric waveguide modes inside the dielectric film strongly increases the s-polarized transmission. Transmission measurements are compared with a coupled mode model and show good qualitative agreement. Adding a waveguide can improve light transmission through subwavelength apertures, as both s and p-polarization can be efficiently transmitted.

Extraordinary optical transmission

Slit

Waveguide

10.1117/12.855064

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Bioimaging: Micropillar Templates for Dielectric Filled Metal Arrays and Flexible Metamaterials (Advanced Optical Materials 3/2017)

Advanced Optical Materials (2017)

María F. Acosta Sergio G. Rodrigo L. Martín‐Moreno Carlos Pecharromán R.I. Merino

A LiF pillar perforated microholey aluminum layer is shown in the image by Rosa I. Merino and co-workers. The structure presented in article number 1600670 is prepared using a directionally solidified eutectic slice as template. Two features make it particularly relevant: the holes are filled with towering dielectric or polaritonic micropillars; and it can be transferred to polymer films, which makes it flexible. It shows enhanced subwavelength transmittance at NIR and THz wavelengths. The band-pass windows can be tailored via the hole dimension and the eutectic used as template.

Template

Pillar

10.1002/adom.201770017

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Spoof Surface Plasmon Metamaterials

MRS Bulletin (2020)

Paloma A. Huidobro Antonio I. Fernández‐Domínguez J. B. Pendry L. Martín‐Moreno F. J. García‐Vidal

10.1557/mrs.2020.111

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Polaritonic Tamm states induced by cavity photons

Nanophotonics (2020)

C. A. Downing L. Martín‐Moreno

Abstract We consider a periodic chain of oscillating dipoles, interacting via long-range dipole–dipole interactions, embedded inside a cuboid cavity waveguide. We show that the mixing between the dipolar excitations and cavity photons into polaritons can lead to the appearance of new states localized at the ends of the dipolar chain, which are reminiscent of Tamm surface states found in electronic systems. A crucial requirement for the formation of polaritonic Tamm states is that the cavity cross section is above a critical size. Above this threshold, the degree of localization of the Tamm states is highly dependent on the cavity size since their participation ratio scales linearly with the cavity cross-sectional area. Our findings may be important for quantum confinement effects in one-dimensional systems with strong light–matter coupling.

Purcell effect

10.1515/nanoph-2020-0370

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Emergent causality and theN-photon scattering matrix in waveguide QED

New Journal of Physics (2017)

Eduardo Sánchez-Burillo Andrea Cadarso L. Martín‐Moreno Juan José García‐Ripoll David Zueco

In this work we discuss the emergence of approximate causality in a general setup from waveguide QED—i.e. a one-dimensional propagating field interacting with a scatterer. We prove that this emergent causality translates into a structure for the N-photon scattering matrix. Our work builds on the derivation of a Lieb–Robinson-type bound for continuous models and for all coupling strengths, as well as on several intermediate results, of which we highlight: (i) the asymptotic independence of space-like separated wave packets, (ii) the proper definition of input and output scattering states, and (iii) the characterization of the ground state and correlations in the model. We illustrate our formal results by analyzing the two-photon scattering from a quantum impurity in the ultrastrong coupling regime, verifying the cluster decomposition and ground-state nature. Besides, we generalize the cluster decomposition if inelastic or Raman scattering occurs, finding the structure of the -matrix in momentum space for linear dispersion relations. In this case, we compute the decay of the fluorescence (photon–photon correlations) caused by this S-matrix.

Causality

Matrix (chemical analysis)

10.1088/1367-2630/aa9cc2

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Single-electron tunneling and Coulomb charging effects in ultrasmall double-barrier heterostructures

Solid-State Electronics (1994)

M. Tewordt V.J. Law J. T. Nicholls L. Martín‐Moreno D. A. Ritchie

Rectangular potential barrier

Coulomb blockade

10.1016/0038-1101(94)90300-x

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van der Waals Materials for Overcoming Fundamental Limitations in Photonic Integrated Circuitry

Nano Letters (2023)

Andrey A. Vyshnevyy Georgy A. Ermolaev Dmitriy Grudinin К. В. Воронін Ivan Kharichkin

With the advance of on-chip nanophotonics, there is a high demand for high-refractive-index and low-loss materials. Currently, this technology is dominated by silicon, but van der Waals (vdW) materials with a high refractive index can offer a very advanced alternative. Still, up to now, it was not clear if the optical anisotropy perpendicular to the layers might be a hindering factor for the development of vdW nanophotonics. Here, we studied WS2-based waveguides in terms of their optical properties and, particularly, in terms of possible crosstalk distance. Surprisingly, we discovered that the low refractive index in the direction perpendicular to the atomic layers improves the characteristics of such devices, mainly due to expanding the range of parameters at which single-mode propagation can be achieved. Thus, using anisotropic materials offers new opportunities and novel control knobs when designing nanophotonic devices.

Nanophotonics

High-refractive-index polymer

10.1021/acs.nanolett.3c02051

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Citations (18)