Generalized Fano lineshapes reveal exceptional points in photonic molecules

N. Caselli, F. Intonti, Federico La China, F. Biccari, F. Riboli, A. Gerardino, L. Li, E.H. Linfield, F. Pagliano, A. Fiore, M. Gurioli

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)
114 Downloads (Pure)

Abstract

The optical behavior of coupled systems, in which the breaking of parity and time-reversal symmetry occurs, is drawing increasing attention to address the physics of the exceptional point singularity, i.e., when the real and imaginary parts of the normal-mode eigenfrequencies coincide. At this stage, fascinating phenomena are predicted, including electromagnetic-induced transparency and phase transitions. To experimentally observe the exceptional points, the near-field coupling to waveguide proposed so far was proved to work only in peculiar cases. Here, we extend the interference detection scheme, which lies at the heart of the Fano lineshape, by introducing generalized Fano lineshapes as a signature of the exceptional point occurrence in resonant-scattering experiments. We investigate photonic molecules and necklace states in disordered media by means of a near-field hyperspectral mapping. Generalized Fano profiles in material science could extend the characterization of composite nanoresonators, semiconductor nanostructures, and plasmonic and metamaterial devices.

Original languageEnglish
Article number396
Number of pages8
JournalNature Communications
Volume9
Issue number1
DOIs
Publication statusPublished - 1 Dec 2018

Fingerprint

Drawing (graphics)
Optics and Photonics
Semiconductors
Nanostructures
Electromagnetic Phenomena
Phase Transition
Physics
Metamaterials
Materials science
Parity
Transparency
Photonics
near fields
Waveguides
Phase transitions
photonics
Scattering
Semiconductor materials
Equipment and Supplies
Molecules

Cite this

Caselli, N., Intonti, F., La China, F., Biccari, F., Riboli, F., Gerardino, A., ... Gurioli, M. (2018). Generalized Fano lineshapes reveal exceptional points in photonic molecules. Nature Communications, 9(1), [396]. https://doi.org/10.1038/s41467-018-02855-3
Caselli, N. ; Intonti, F. ; La China, Federico ; Biccari, F. ; Riboli, F. ; Gerardino, A. ; Li, L. ; Linfield, E.H. ; Pagliano, F. ; Fiore, A. ; Gurioli, M. / Generalized Fano lineshapes reveal exceptional points in photonic molecules. In: Nature Communications. 2018 ; Vol. 9, No. 1.
@article{13aadc9464ea4c0ea4fff5a60a28a208,
title = "Generalized Fano lineshapes reveal exceptional points in photonic molecules",
abstract = "The optical behavior of coupled systems, in which the breaking of parity and time-reversal symmetry occurs, is drawing increasing attention to address the physics of the exceptional point singularity, i.e., when the real and imaginary parts of the normal-mode eigenfrequencies coincide. At this stage, fascinating phenomena are predicted, including electromagnetic-induced transparency and phase transitions. To experimentally observe the exceptional points, the near-field coupling to waveguide proposed so far was proved to work only in peculiar cases. Here, we extend the interference detection scheme, which lies at the heart of the Fano lineshape, by introducing generalized Fano lineshapes as a signature of the exceptional point occurrence in resonant-scattering experiments. We investigate photonic molecules and necklace states in disordered media by means of a near-field hyperspectral mapping. Generalized Fano profiles in material science could extend the characterization of composite nanoresonators, semiconductor nanostructures, and plasmonic and metamaterial devices.",
author = "N. Caselli and F. Intonti and {La China}, Federico and F. Biccari and F. Riboli and A. Gerardino and L. Li and E.H. Linfield and F. Pagliano and A. Fiore and M. Gurioli",
year = "2018",
month = "12",
day = "1",
doi = "10.1038/s41467-018-02855-3",
language = "English",
volume = "9",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",

}

Caselli, N, Intonti, F, La China, F, Biccari, F, Riboli, F, Gerardino, A, Li, L, Linfield, EH, Pagliano, F, Fiore, A & Gurioli, M 2018, 'Generalized Fano lineshapes reveal exceptional points in photonic molecules', Nature Communications, vol. 9, no. 1, 396. https://doi.org/10.1038/s41467-018-02855-3

Generalized Fano lineshapes reveal exceptional points in photonic molecules. / Caselli, N.; Intonti, F.; La China, Federico; Biccari, F.; Riboli, F.; Gerardino, A.; Li, L.; Linfield, E.H.; Pagliano, F.; Fiore, A.; Gurioli, M.

In: Nature Communications, Vol. 9, No. 1, 396, 01.12.2018.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Generalized Fano lineshapes reveal exceptional points in photonic molecules

AU - Caselli, N.

AU - Intonti, F.

AU - La China, Federico

AU - Biccari, F.

AU - Riboli, F.

AU - Gerardino, A.

AU - Li, L.

AU - Linfield, E.H.

AU - Pagliano, F.

AU - Fiore, A.

AU - Gurioli, M.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - The optical behavior of coupled systems, in which the breaking of parity and time-reversal symmetry occurs, is drawing increasing attention to address the physics of the exceptional point singularity, i.e., when the real and imaginary parts of the normal-mode eigenfrequencies coincide. At this stage, fascinating phenomena are predicted, including electromagnetic-induced transparency and phase transitions. To experimentally observe the exceptional points, the near-field coupling to waveguide proposed so far was proved to work only in peculiar cases. Here, we extend the interference detection scheme, which lies at the heart of the Fano lineshape, by introducing generalized Fano lineshapes as a signature of the exceptional point occurrence in resonant-scattering experiments. We investigate photonic molecules and necklace states in disordered media by means of a near-field hyperspectral mapping. Generalized Fano profiles in material science could extend the characterization of composite nanoresonators, semiconductor nanostructures, and plasmonic and metamaterial devices.

AB - The optical behavior of coupled systems, in which the breaking of parity and time-reversal symmetry occurs, is drawing increasing attention to address the physics of the exceptional point singularity, i.e., when the real and imaginary parts of the normal-mode eigenfrequencies coincide. At this stage, fascinating phenomena are predicted, including electromagnetic-induced transparency and phase transitions. To experimentally observe the exceptional points, the near-field coupling to waveguide proposed so far was proved to work only in peculiar cases. Here, we extend the interference detection scheme, which lies at the heart of the Fano lineshape, by introducing generalized Fano lineshapes as a signature of the exceptional point occurrence in resonant-scattering experiments. We investigate photonic molecules and necklace states in disordered media by means of a near-field hyperspectral mapping. Generalized Fano profiles in material science could extend the characterization of composite nanoresonators, semiconductor nanostructures, and plasmonic and metamaterial devices.

UR - http://www.scopus.com/inward/record.url?scp=85041124791&partnerID=8YFLogxK

U2 - 10.1038/s41467-018-02855-3

DO - 10.1038/s41467-018-02855-3

M3 - Article

C2 - 29374174

AN - SCOPUS:85041124791

VL - 9

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 396

ER -

Caselli N, Intonti F, La China F, Biccari F, Riboli F, Gerardino A et al. Generalized Fano lineshapes reveal exceptional points in photonic molecules. Nature Communications. 2018 Dec 1;9(1). 396. https://doi.org/10.1038/s41467-018-02855-3