Shegai Group

The scientific interests, goals and area of expertise of the Shegai group can be briefly summarized as nanoscale light-matter interactions. Our aim is to investigate fundamental and quantum optical aspects of light matter-interactions, as well as to develop practical applications in e.g. surface-enhanced spectroscopies and sensing. The benchmark of the group is experimental facilities and experience that allows us to perform experiments on a single nanoparticle – single molecule level.

Our recent activities include plasmon-exciton interactions, strong coupling phenomena, non-linear and low temperature single particle imaging and spectroscopy, surface-enhanced Raman scattering and fluorescence microscopy.

Recent publications (for a complete list see e.g. Google Scholar and Research Gate)


A​nkit Bisht , Jorge Cuadra, Martin Wersäll, Adriana Canales, Tomasz J. Antosiewicz and Timur Shegai
Collective Strong Light-Matter Coupling in Hierarchical Microcavity-Plasmon-Exciton Systems 
Nano Letters (2018)

Battulga Munkhbat, Denis G. Baranov, Michael Stührenberg, Martin Wersäll, Ankit Bisht and Timur Shegai
Self-hybridized exciton-polaritons in multilayers of transition metal dichalcogenides for efficient light absorption 
ACS Photonics (2018)

Michael Stührenberg, Battulga Munkhbat, Denis G. Baranov, Jorge Cuadra, Andrew B. Yankovich, Tomasz J. Antosiewicz, Eva Olsson, and Timur Shegai
Strong Light-Matter Coupling between Plasmons in Individual Gold Bi-Pyramids and Excitons in Mono- and Multilayer WSe2 
Nano Letters (2018)

Ekaterina Y. Tiguntseva, Denis G. Baranov, Anatoly P. Pushkarev, Battulga Munkhbat, Filipp Komissarenko, Marius Franckevicius, Anvar A. Zakhidov, Timur Shegai, Yuri S. Kivshar, and Sergey V. Makarov
Tunable Hybrid Fano Resonances in Halide Perovskite Nanoparticles
Nano Letters (2018)

Benjamin Rosseaux, Denis G. Baranov, Mikael Käll, Timur Shegai, and Göran Johansson
Quantum Description and Emergence of Nonlinearities in Strongly Coupled Single-Emitter Nanoantenna Systems
Physical Review B (2018)

Battulga Munkhbat, Martin Wersäll, Denis G. Baranov, Tomasz J. Antosiewicz, and Timur Shegai
Suppression of Photo-Oxidation of Organic Chromophores by Strong Coupling to Plasmonic Nanoantennas
Science Advances (2018)

Jorge Cuadra, Denis G. Baranov, Martin Wersäll, Ruggero Verre, Tomasz J. Antosiewicz, and Timur Shegai
Observation of Tunable Charged Exciton Polaritons in Hybrid Monolayer WS2 - Plasmonic Nanoantenna System 
Nano Letters (2017)
DOI: 10.1021/acs.nanolett.7b04965


Denis G. Baranov, Martin Wersäll, Jorge Cuadra, Tomasz J. Antosiewicz, and Timur Shegai 
Novel Nanostructures and Materials for Strong Light-Matter Interactions
ACS Photonics (2017)

Denis G. Baranov, Alex Krasnok, Timur Shegai, Andrea Alù, and Yidong Chong 
Coherent Perfect Absorbers: Linear Control of Light with Light
Nature Review Materials (2017)
Jorge Cuadra, Ruggero Verre, Martin Wersäll, Clemens Krückel, Victor Torres-Company, Tomasz J. Antosiewicz, and Timur Shegai
Hybrid Dielectric Waveguide Spectroscopy of Individual Plasmonic Nanoparticles
AIP Advances (2017)


Martin Wersäll, Jorge Cuadra, Tomasz J. Antosiewicz, Sinan Balci, and Timur Shegai
Observation of Mode Splitting in Photoluminescence of Individual Plasmonic Nanoparticles
Strongly Coupled to Molecular Excitons

Nano Letters (2016)
DOI: 10.1021/acs.nanolett.6b04659

Zhong-Jian Yang, Tomasz J. Antosiewicz, and Timur Shegai
Role of Material Loss and Mode Volume of Plasmonic Cavities for Strong Plasmon-Exciton Interactions
Optics Express (2016)
DOI: 10.1364/OE.24.020373

Gülis Zengin, Tina Gschneidtner, Ruggero Verre, Lei Shao, Tomasz J. Antosiewicz, Kasper Moth-Poulsen, Mikael Käll, and Timur Shegai
Evaluating Conditions for Strong Coupling between Nanoparticle Plasmons and Organic Dyes Using Scattering and Absorption Spectroscopy
J. Phys. Chem. C. (2016)

 Gülis Zengin, Martin Wersäll, Sara Nilsson, Tomasz J. Antosiewicz, Mikael Käll, and
Timur Shegai
Realizing Strong Light-Matter Interactions between Single-Nanoparticle Plasmons and
Molecular Excitons at Ambient Conditions
Phys. Rev. Lett. 114, 157401, (2015)

Martin Wersäll, Ruggero Verre, Mikael Svedendahl, Peter Johansson, Mikael Käll, and
Timur Shegai
Directional Nanoplasmonic Antennas for Self-Referenced Refractometric Molecular Analysis
J. Phys. Chem. C, 118, 21075-21080, (2014)

Tomasz J. Antosiewicz, S. Peter Apell, and Timur Shegai
Plasmon-Exciton Interactions in a Core-Shell Geometry: From Enhanced Absorption to
Strong Coupling
ACS Photonics, 1, 454-463, (2014)

Gülis Zengin, Göran Johansson, Peter Johansson, Tomasz J. Antosiewicz, Mikael Käll, and
Timur Shegai
Approaching the Strong Coupling Limit in Single Plasmonic Nanorods Interacting with J-aggregates
Scientific Reports 3, 3074, (2013)
Project Leader
Timur Shegai

Published: Mon 13 May 2013. Modified: Wed 20 Feb 2019