137 citations · 784 across the 25 of their papers we have counts for
27 papers
Spectral Anisotropy in Transition Radiation from Biaxial Media
Sven Ebel, Bibi Mary Francis, Min Seok Jang +4
In anisotropic optical media, the electromagnetic response depends on the orientation of the optical field relative to the material's principal dielectric axes. While this directio…
Unveiling the Spin-Valley Structure of Dipolar Exciton Ladders in R-stacked WSe/WS Moiré Heterobilayers
Byeong Wook Cho, Tatyana V. Ivanova, Zhe Li +4
Localized interlayer excitons in moiré heterobilayers can form dipolar exciton ladders, yet their internal spin-valley structure remains unresolved. Here, we use helicity-resolved…
Twist-Engineered Nonlinearity in Two-Dimensional Crystals for Tailored Quantum Light
Dylan Mcleod, Fabrizio Chiriano, Francesco Graffitti +3
Van der Waals (vdW) materials enable nonlinear-optical engineering with unprecedented resolution: their strong second-order susceptibilities () and twist-tunable interlaye…
Photoexcitation of moiré-trapped interlayer excitons via chiral phonons
A. Borel, T. V. Ivanova, J. Cervantes-Villanueva +7
Moiré superlattices in transition-metal dichalcogenide semiconductor heterobilayers enable the quantum confinement of interlayer excitons with large out-of-plane permanent electric…
Roadmap: 2D Materials for Quantum Technologies
Qimin Yan, Tongcang Li, Xingyu Gao +29
Two-dimensional (2D) materials have emerged as a versatile and powerful platform for quantum technologies, offering atomic-scale control, strong quantum confinement, and seamless i…
Highly tunable band structure in ferroelectric R-stacked bilayer WSe
Zhe Li, Prokhor Thor, George Kourmoulakis +6
Transition metal dichalcogenide homobilayers unite two frontiers of quantum materials research: sliding ferroelectricity, arising from rhombohedral (R) stacking, and moiré quantum…
Quadrupolar and Dipolar Excitons in Bilayer 2-MoSe
Shun Feng, Aidan J. Campbell, Bibi Mary Francis +6
We report the experimental observation of quadrupolar exciton states in the reflectance contrast spectrum of 2-stacked bilayer MoSe. The application of a vertical electric f…
Interlayer and moiré excitons in atomically thin double layers: from individual quantum emitters to degenerate ensembles
Mauro Brotons-Gisbert, Brian D. Gerardot, Alexander W. Holleitner +1
Interlayer excitons (IXs), composed of electron and hole states localized in different layers, excel in bilayers composed of atomically thin van der Waals materials such as semicon…
Optical contrast analysis of α-RuCl nanoflakes on oxidized silicon wafers
Tatyana V. Ivanova, Daniel Andres-Penares, Yiping Wang +6
α-RuCl, a narrow-band Mott insulator with large work function, offers intriguing potential as a quantum material or as a charge acceptor for electrical contacts in van der Waal…
The interplay of field-tunable strongly correlated states in a multi-orbital moiré system
Aidan J. Campbell, Valerio Vitale, Mauro Brotons-Gisbert +5
The interplay of charge, spin, lattice, and orbital degrees of freedom leads to a wide range of emergent phenomena in strongly correlated systems. In heterobilayer transition metal…
Highly Tunable Ground and Excited State Excitonic Dipoles in Multilayer 2H-MoSe
Shun Feng, Aidan Campbell, Mauro Brotons-Gisbert +7
The fundamental properties of an exciton are determined by the spin, valley, energy, and spatial wavefunctions of the Coulomb bound electron and hole. In van der Waals materials, t…
Van der Waals Materials for Applications in Nanophotonics
Panaiot G. Zotev, Yue Wang, Daniel Andres-Penares +12
Numerous optical phenomena and applications have been enabled by nanophotonic structures. Their current fabrication from high refractive index dielectrics, such as silicon or galli…
Moiré straintronics: a universal platform for reconfigurable quantum materials
M. Kögl, P. Soubelet, M. Brotons-Gisbert +3
Large scale two-dimensional (2D) moiré superlattices are driving a revolution in designer quantum materials. The electronic interactions in these superlattices, strongly dependent…
Exciton-polarons in the presence of strongly correlated electronic states in a MoSe/WSe moiré superlattice
Aidan J. Campbell, Mauro Brotons-Gisbert, Hyeonjun Baek +5
Two-dimensional moiré materials provide a highly tunable platform to investigate strongly correlated electronic states. Such emergent many-body phenomena can be optically probed in…
Optical and dielectric properties of MoO nanosheets for van der Waals heterostructures
Daniel Andres-Penares, Mauro Brotons-Gisbert, Cristian Bonato +2
Two-dimensional (2D) insulators are a key element in the design and fabrication of van der Waals heterostructures. They are vital as transparent dielectric spacers whose thickness…
Optical dipole orientation of interlayer excitons in MoSe-WSe heterostacks
Lukas Sigl, Mirco Troue, Manuel Katzer +10
We report on the far-field photoluminescence intensity distribution of interlayer excitons in MoSe-WSe heterostacks as measured by back focal plane imaging in the tempe…
Optical read-out of Coulomb staircases in a moiré superlattice via trapped interlayer trions
Hyeonjun Baek, Mauro Brotons-Gisbert, Aidan Campbell +5
Moiré patterns with a superlattice potential can be formed by vertically stacking two layered materials with a relative twist or lattice constant mismatch. The moiré superlattice c…
Moiré-trapped interlayer trions in a charge-tunable WSe/MoSe heterobilayer
Mauro Brotons-Gisbert, Hyeonjun Baek, Aidan Campbell +3
Transition metal dichalcogenide heterobilayers offer attractive opportunities to realize lattices of interacting bosons with several degrees of freedom. Such heterobilayers can fea…
Coherent Dynamics in Quantum Emitters under Dichromatic Excitation
Z. X. Koong, E. Scerri, M. Rambach +8
We characterize the coherent dynamics of a two-level quantum emitter driven by a pair of symmetrically-detuned phase-locked pulses. The promise of dichromatic excitation is to spec…
Resonance fluorescence from waveguide-coupled strain-localized two-dimensional quantum emitters
Carlos Errando-Herranz, Eva Schöll, Raphaël Picard +12
Efficient on-chip integration of single-photon emitters imposes a major bottleneck for applications of photonic integrated circuits in quantum technologies. Resonantly excited soli…
Highly tunable quantum light from moiré trapped excitons
Hyeonjun Baek, Mauro Brotons-Gisbert, Zhe Xian Koong +5
Photon antibunching, a hallmark of quantum light, has been observed in the correlations of light from isolated atomic and atomic-like solid-state systems. Two-dimensional semicondu…
Spin-layer locking of interlayer excitons trapped in moiré potentials
Mauro Brotons-Gisbert, Hyeonjun Baek, Alejandro Molina-Sánchez +7
Van der Waals heterostructures offer attractive opportunities to design quantum materials. For instance, transition metal dichalcogenides (TMDs) possess three quantum degrees of fr…
Discrete Interactions between a few Interlayer Excitons Trapped at a MoSe-WSe Heterointerface
Malte Kremser, Mauro Brotons-Gisbert, Johannes Knörzer +7
Interlayer excitons (IXs) in hetero-bilayers of transition metal dichalcogenides (TMDs) represent an exciting emergent class of long-lived dipolar composite bosons in an atomically…
Out-of-plane orientation of luminescent excitons in atomically thin indium selenide flakes
Mauro Brotons-Gisbert, Raphaël Proux, Raphaël Picard +5
Van der Waals materials offer a wide range of atomic layers with unique properties that can be easily combined to engineer novel electronic and photonic devices. A missing ingredie…