579 citations · 836 across the 24 of their papers we have counts for
25 papers
Epitaxial single T centres in silicon-on-insulator
Christian H. Christiansen, Kasper H. Nielsen, Alisha Nanwani +26
Spin-photon interfaces based on silicon quantum emitters offer a scalable platform for quantum computing and networking. However, achieving coherent photon emission remains a prima…
Colour Centre Formation in Silicon-On-Insulator for On-Chip Photonic Integration
Arnulf J. Snedker-Nielsen, David R. Gongora, Magnus L. Madsen +12
Colour centres in silicon have great potential as single photon sources for quantum technologies. Some of them - like the T centre - also possess optically-active spins that enable…
On intermolecular interactions in the Hamiltonian used in polaritonic chemistry
Marit R. Fiechter, Mark Kamper Svendsen
Experiments have shown that strong coupling between molecular excitations and a mode of a Fabry--Pérot cavity can significantly alter molecular properties, such as reaction rates a…
Multiple Photon Field-induced Topological States in Bulk HgTe
Dongbin Shin, I-Te Lu, Benshu Fan +6
Strong light-matter interactions can be exploited to modify properties of quantum materials both in and out of thermal equilibrium. Recent studies suggest electromagnetic fields in…
Self-consistent layer-projected scissors operator for band structures of complex 2D van der Waals materials
Dario A. Leon, Mikael Kuisma, Mikkel Ohm Sauer +6
We introduce a computationally efficient method to calculate the quasiparticle (QP) band structure of general van der Waals (vdW) heterostructures. A layer-projected scissors (LAPS…
Many-body effects of two-level systems in superconducting qubits
Joshuah T. Heath, Alexander C. Tyner, Thue Christian Thann +4
Superconducting qubits are often adversely affected by two-level systems (TLSs) within the Josephson junction, which contribute to decoherence and subsequently limit the performanc…
Computational discovery of high-refractive-index van der Waals materials: The case of HfS
Xavier Zambrana-Puyalto, Mark Kamper Svendsen, Amalie H. Søndersted +9
New high-refractive-index dielectric materials may enhance many optical technologies by enabling efficient manipulation of light in waveguides, metasurfaces, and nanoscale resonato…
Cavity engineering of solid-state materials without external driving
I-Te Lu, Dongbin Shin, Mark Kamper Svendsen +4
Confining electromagnetic fields inside an optical cavity can enhance the light-matter coupling between quantum materials embedded inside the cavity and the confined photon fields.…
Identification of soft modes in amorphous AlO via first-principles
Alexander C. Tyner, Joshuah T. Heath, Thue Christian Thann +4
Amorphous AlO is a fundamental component of modern superconducting qubits. While amphorphous oxides offer distinct advantages, such as directional isotropy and a consis…
Cavity Spectroscopy for Strongly Correlated Systems
Lukas Grunwald, Emil Viñas Boström, Mark Kamper Svendsen +2
Embedding materials in optical cavities has emerged as an intriguing perspective for controlling quantum materials, but a key challenge lies in measuring properties of the embedded…
On-demand heralded MIR single-photon source using a cascaded quantum system
Jake Iles-Smith, Mark Kamper Svendsen, Angel Rubio +2
We propose a novel mechanism for generating single photons in the mid-Infrared (MIR) using a solid-state or molecular quantum emitter. The scheme utilises cavity QED effects to sel…
Cavity engineered phonon-mediated superconductivity in MgB from first principles quantum electrodynamics
I-Te Lu, Dongbin Shin, Mark Kamper Svendsen +5
Strong laser pulses can control superconductivity, inducing non-equilibrium transient pairing by leveraging strong-light matter interaction. Here we demonstrate theoretically that…
Effective Equilibrium Theory of Quantum Light-Matter Interaction in Cavities: Extended Systems and the Long Wavelength Approximation
Mark Kamper Svendsen, Michael Ruggenthaler, Hannes Hübener +4
When light and matter interact strongly, the resulting hybrid system inherits properties from both constituents, allowing one to modify material behavior by engineering the surroun…
Accurate Dielectric Response of Solids: Combining the Bethe-Salpeter Equation with the Random Phase Approximation
Amalie H. Søndersted, Mikael Kuisma, Jakob K. Svaneborg +2
The Bethe-Salpeter equation (BSE) can provide an accurate description of low-energy optical spectra of insulating crystals - even when excitonic effects are important. However, due…
Ab initio calculations of quantum light-matter interactions in general electromagnetic environments
Mark Kamper Svendsen, Kristian Sommer Thygesen, Angel Rubio +1
The emerging field of strongly coupled light-matter systems has drawn significant attention in recent years due to the prospect of altering physical and chemical properties of mole…
Combining experiments on luminescent centres in hexagonal boron nitride with the polaron model and ab initio methods towards the identification of their microscopic origin
Moritz Fischer, Ali Sajid, Jake Iles-Smith +10
The two-dimensional material hexagonal boron nitride (hBN) hosts luminescent centres with emission energies of 2 eV which exhibit pronounced phonon sidebands. We investigate the mi…
Signatures of Non-Markovianity in Cavity-QED with Color Centers in 2D Materials
Mark Kamper Svendsen, Sajid Ali, Nicolas Stenger +2
Light-matter interactions of defects in two dimensional materials are expected to be profoundly impacted by strong coupling to phonons. In this work, we combine ab initio calculati…
Indirect band gap semiconductors for thin-film photovoltaics: High-throughput calculation of phonon-assisted absorption
Jiban Kangsabanik, Mark Kamper Svendsen, Alireza Taghizadeh +2
Discovery of high-performance materials remains one of the most active areas in photovoltaics (PV) research. Indirect band gap materials form the largest part of the semiconductor…
as transparent top gate for near-field experiments
Niels C. H. Hesp, Mark Kamper Svendsen, Kenji Watanabe +4
Independent control of carrier density and out-of-plane displacement field is essential for accessing novel phenomena in two-dimensional material heterostructures. While this is ac…
Momentum-dependent oscillator strength crossover of excitons and plasmons in two-dimensional PtSe2
Jinhua Hong, Mark Kamper Svendsen, Masanori Koshino +4
The 1T-phase layered PtX2 chalcogenides has attracted widespread interest due to its thickness dependent metal-semiconductor transition driven by strong interlayer coupling. While…
Exploring and machine learning structural instabilities in 2D materials
Simone Manti, Mark Kamper Svendsen, Nikolaj R. Knøsgaard +2
We address the problem of predicting the zero-temperature dynamical stability (DS) of a periodic crystal without computing its full phonon band structure. Here we report the eviden…
Ultraviolet Mie resonances in computationally discovered boron phosphide nanoparticles
Mark Kamper Svendsen, Hiroshi Sugimoto, Artyom Assadillayev +4
Controlling ultraviolet light at the nanoscale using optical Mie resonances holds great promise for a diverse set of applications, such as lithography, sterilization, and biospectr…
Combining density functional theory with macroscopic QED for quantum light-matter interactions in 2D materials
Mark Kamper Svendsen, Yaniv Kurman, Peter Schmidt +3
A quantitative and predictive theory of quantum light-matter interactions in ultra thin materials involves several fundamental challenges. Any realistic model must simultaneously a…
Recent Progress of the Computational 2D Materials Database (C2DB)
M. N. Gjerding, A. Taghizadeh, A. Rasmussen +13
The C2DB is a highly curated open database organizing a wealth of computed properties for more than 4000 atomically thin two-dimensional (2D) materials. Here we report on new mater…