Competences

Jesper Mørk, Professor
Center Leader of NanoPhoton 

As Center Leader, I hold responsibility towards the Danish National Research Foundation of the scientific progress in NanoPhoton, the education activities as well as the economy. I will take part in all Workpackages, but my own research will be mainly focused on EDC cavities as the basis for strong light-matter action, few-emitter nanolasers, and nonlinear switching.

Philip Trøst Kristensen, Senior Researcher
Scientific Coordinator

Electromagnetic and quantum optical theory of EDC cavities.
As scientific coordinator, I manage and organize the work in the research center, including scientific discussions, financial planning and outreach activities. In addition, I work on fundamental aspects of light-matter interaction in EDC cavities to set up electromagnetic and quantum optical models of EDC cavities and coupled cavity-waveguide based integrated optics.

Lotte Lykke Pedersen, Administrative Coordinator

I deal with the administrative activities of NanoPhoton. This means planning and handling meetings, workshops and conferences and coordinating and collecting all reporting to the DNRF and various other tasks.

Søren Stobbe, Professor
Leader of WP1: Extreme dielectric confinement of light

I am heading the research in WP1, which is concerned with understanding the fundamental limits to the light-matter interaction strength, realizing optical nonlinearities at the few-photon level using EDC cavities, and exploring topological photonics in EDC systems.

Kresten Yvind, Professor
Leader of WP 2: Nanoscale optoelectronic devices and their integration with electronics

Expert on design, fabrication and characterization of photonic and optoelectronic semiconductor devices.

Ole Sigmund, Professor
Leader of WP3: Theory and Topology Optimization

Apart from being WP Leader I will head the topology optimization activities in NanoPhoton. My background is mechanical engineering but I have gained insight into nano-photonics from collaborations with Fotonik people for last 15 years. My group has pioneered the use of inverse design methods in nano-photonics and we will continue this work focused on EDC cavities and with the inclusion of manufacturing aspects and multi physics couplings in the NanoPhoton project.

Elizaveta Semenova, Senior Researcher
Leader of WP 4: Nanofabrication and nanoscopy

I am the leader of WP 4 and the research conducted therein, which is focused on advanced epitaxial methods and nanoscopy. My main scientific interest is in the development of new epitaxial methods with a strong weight on III-V compound semiconductors with the aim to enable new material properties and device functionalities. Furthemore, I pursue their integration with the other material including silicon.

Martijn Wubs, Professor

Nanoscale quantum optics, with an interest in collective quantum phenomena. Within NanoPhoton, I study how quantum emitters, including novel light sources in 2D materials, interact with EDC cavities and waveguides.

Nicolas Leitherer-Stenger, Associate Professor

I am specialized in nanophotonics with focus on strong light-matter interaction as well as the investigation of the optical properties of individual quantum emitters in two-dimensional materials. In order to characterise these systems optically I lead experimental activities on far- and near-field spectroscopy. I am also expanding my activities to the field of photonics in low-dimensional materials.

Sanshui Xiao, Associate Professor

2D materials integrated with EDC cavities, Topological photonics.
I work on 2D materials integrated with EDC cavity, specifically exploring exciton-photon interactions, and demonstrating extreme spontaneous and stimulated emission, and I also work on fundamental aspects light confinement with the concept of topological photonics.

Andrei Laurynenka, Associate Professor

Expertise in metamaterials, metasurfaces, epsilon-near-zero materials and near-zero-index waveguides, numerical analysis of linear and nonlinear optical waves propagation. 

Rasmus Ellebæk Christiansen, Associate Professor

Topology Optimization based inverse design and numerical modelling of wave propagation phenomena and electromagnetism.
WP3: Theory and Topology Optimization. In NanoPhoton, I work with Topology Optimization to design EDC structures and topological structures for a wide range of applications. To this end I research and develop novel topology optimization based tools and methods, working among others to integrate fabrication limitations and design robustness directly in the design procedure to facilitate the reliable fabrication of designs, hereby bridging the gap between numerical models and experiments

WP1: I am interested in questions of how tight a photon can be confined in spacetime? What is its consequence on light-matter interaction? And how the extreme regime of photon confinement can be explored experimentally.

Mikkel Heuck, Senior Researcher

Theory of light-matter interaction: Photons interacting with photons and photons interacting with classical electromagnetic fields via chi(2) and chi(3) nonlinearities. Integrated photonic circuits: Cavities and heterogeneous integration of different material systems. Quantum information science: Using optical nonlinearities to perform elementary operations relevant for quantum information processing.

Yi Yu, Senior Researcher 

Waves, dynamics
As a Senior researcher, I investigate, theoretically and experimentally, light-matter interactions in EDC cavities with a special focus on active structures and their explorations for ultra-small optoelectronic devices such as lasers, modulations and detectors at nanoscale. I am particularly interested in wave phenomena and dynamics in both the classical and quantum regimes.

Minhao Pu, Senior Researcher

I work on nonlinear chi(2) and chi(3) processes in integrated waveguides and cavities, fabrication technologies for high-quality microcavities (e.g., EDC cavities), topology-optimized nanostructures.

Shima Kadkhodazadeh, Senior Researcher

I work on WP4. My activities are focused on probing the structural and optical properties of EDCs and related structures with electron-beam imaging and spectroscopy methods.

Thomas Christensen, Senior Researcher

I am interested in the realization and manifestations of topological phenomena in photonic systems, especially in symmetry-protected topological phases. Expertise includes photonic crystal design and analysis, light-matter interaction, topological band theory, and group theory.

Meng Xiong, Research Assistant

As a research assistant, I work on design, fabrication and characterization of InP active EDC structures based on semiconductor quantum dots and quantum wells, with a special focus on explorating them for nanolasers and nanodetectors as well as their integrations for ultradense optoelectronic circuits.

Ayman Nassar Kamel, Postdoc

I work on the integration of EDC cavities with nano-electronic devices, with a vision of providing a platform for sub-femto-joule-per-bit interconnects. I have experience in non-linear integrated optics and interface physics, both of which are useful for such nano-optoelectronic devices we hope to realize.

Pawel Holewa, Postdoc

I work on the design, fabrication, and characterization of nano-optoelectronic devices in the III-V on Si integrated platform. My focus is on implementing a combination of the buried heterostructure approach for active material epitaxy with the EDC cavities for application in nanolasers, nanodetectors, and quantum emitters.

 Laura N.N.F. Casses, Postdoc

Near field characterization of the EDC cavities.
I work on the characterization of EDC cavities with a scattering-scanning near field optical microscope (s-SNOM).

Sergei Lepeshov, Postdoc

My research focuses on the theory of extreme light-matter interaction phenomena. Specifically, I am studying the Purcell effect of the emitters embedded into the silicon bowtie microcavities.

Monia Runge Nielsen, Postdoc 

During this project, I  will use advanced electron microscopy to image light-induced charge carrier accumulation in photocatalysts.

Hanlin Fang, Postdoc

I focus on studying the exciton physics in 2D materials and their use in advancing integrated optophotonic applications. 

Michael Seifner, Postdoc

My research activities focus on probing the optical properties of EDC cavities and investigating epitaxial relationships in III-V/Si heterostructures using advanced electron microscopy techniques. 

George Kountouris, PhD Student

Electromagnetic and quantum optical theory of EDC structures interfaced with active materials: lasing, novel features and nonlinearities.
WP 3: Theory and topology optimization. I work with theory and simulations to support the development of quantum models of light-matter interaction in EDC structures interfaced with active materials, such as quantum dots, quantum wells and 2D materials. Using these models, I will investigate classical and quantum non-linearities and lasing operations at the few-photon level in structures with extreme light confinement.

Göktug Isiklar, PhD Student

WP3: I am working on topology optimization based inverse design tools for EDC nanocavities. My main study interests consist of developing efficient large-scale computational EM solvers for optimization problems, investigating numerical tools for accurately modeling fabrication limitations, and exploring the different figures of merits to enhance light-matter interaction with inverse designed EDC cavities.

Maria Vittoria Gurrieri, PhD Student

I work on the development of theoretical models for light-matter interaction in EDC-structures. My research is focused on the investigation of such interaction in optical nanocavities coupled with 2D materials.

Ali Nawaz Babar, PhD Student

WP1: My goal is to fabricate and characterize nanocavities in silicon with extreme dielectric confinement. I would like to investigate nonlinearities in topology-optimized nanocavities using pump-probe measurements. During my PHD, I would also like to explore the integration of nonlinear materials with silicon nanocavities to enhance the Kerr nonlinear effect. 

Alisha Nanwani, PhD Student

Selective Epitaxy of III-V/Si Nanostructures for Extreme Dielectric Confinement of Light.

Anastasiia Vladimirova, PhD Student

I am working in WP1. By using all power of nanofabrication and theory of the light-matter interaction I am trying to make Si shine.

Alexandra Palici, PhD Student

My PhD project addresses the challenges of practical quantum repeaters implementations through a novel device concept that provides control over nonlinear light-matter interactions in photonic integrated circuits (PICs). One aspect is control over the spatio-temporal degrees of freedom of photons to enable their use as mediators of interactions between long-lived solid-state quantum memories. Another aspect is control over photon-photon interactions mediated by nonlinear light-matter interactions. The project involves fundamental theory, design, simulation, fabrication and characterization. 

Frederik Schröder, PhD Student

My research focusses on investigating light-matter interactions in nanocavities coupled to 2D materials, which could be exploited for novel (quantum) light sources. I am carrying out photoluminescence, scattering and reflection measurements as well as measurements with a scattering-scanning near-field optical microscope.

Konstantinos Tsoukalas, PhD Student

I work on fluctuation-induced phenomena, such as the Casimir effect, in nano-electro-mechanical systems.

Kristian Seegert, PhD Student 

My research is focused on theory and experimental characterization of nanostructured lasers and, in particular, the dynamical aspects. I make use of dynamical systems theory, coupled-mode theory, and numerical simulations to model active photonic nanostructures as well as the dynamical response of these systems.

Beñat Martínez de Aguirre Jokisch, PhD Student

WP3: My work is based upon the inverse design of nanophotonic structures using topology optimization. I am interested in understanding the fundamental physics of light-matter interaction with special focus on optimizing nanostructures to exploit transient and non-linear phenomena, while taking into account fabrication limitations.

Robin Dahiya, PhD Student

Design, fabricate, and characterize two-photon absorption silicon photodetector based on extreme dielectric confinement of light

Amedeo Carbone, PhD Student

My research work is on single-photon emitters (SPEs) in few-layers hexagonal boron nitride (hBN), both on the samples production side and on their optical characterization. The next step in my work will be to integrate these SPEs in extremely confined nanocavities to enhance their electromagnetic properties.

Benjamin Falkenberg Gøtzsche, PhD Student 

I am investigating the theory of optical manipulation of matter. My work is focused on optical trapping and near-field effects in dielectric nano-cavities featuring extreme dielectric confinement of light.

Mathias Marchal, PhD Student 

During my PhD I will continue the research on state-of-the-art nanolasers in the III-V on Si integrated platform developed at the Quantum and Lasers Photonics Group at DTU. The work will involve modelling, design optimization, fabrication, and characterization of the nanolasers and focusses on improving the performance as well as gaining a deeper understanding of the underlying physics.

Simon Klinck Borregaard, PhD Student

I mainly work on fabrication and experimental characterisation of nanolasers based on subwavelength dielectric nanostructures. My tasks include numerical design, electron beam lithography, semiconductor dry etching, post-processing, and optical characterisation. 

Christian Camilo Ruiz, PhD student

I work on epitaxial growth of III-V semiconductor heterostructures. My research is focused on advancing self-assembled quantum dot growth methods and implementing new approaches to tailor the properties of individual QDs as well as array properties.

Michelle Wang, PhD student

My research focuses on topological phenomena in photonic systems. I study photonic band structures using the language of group representations, with potential applications for photonic crystal design.

Matias Bundgaard-Nielsen, PhD student

I work on a deep theoretical understanding of the quantum optics of nanostructures with Extreme Dielectric Confinement (EDC), including developing efficient numerical simulation tools. In the project, I will work on identifying promising structures for experimental exploration by investigating, e.g., nanolasers with reduced quantum noise.

Odysseas Kosmatos, PhD student 

I will do a PhD Project on selective epitaxy of III/V Si nanostructures for photonic application. It is about theoretical and experimental investigation of nucleation processes of III-V compounds on silicon. Developing and applying new epitaxial methods for realizing III-V photonics devices monolithically integrated into the Si-platform.

Jørn Marcher Hvam, Professor Emeritus

Broad experience in nanophotonics including plasmonics and THz technology. Focus on ultrafast nonlinear optical spectroscopy of low-dimensional semiconductor nanostructures investigating excitons, biexcitons and polaritons including cavity polaritons and surface plasmon polaritons.

WP 2: Nanoscale optoelectronic devices and their integration with electronics. 
Experience in silicon micro- and nanotechnology, electronic device physics, technology and characterization.