307 citations · 1.3k across the 23 of their papers we have counts for
23 papers
Probing and Tuning Strain-localized Exciton Emission in 2D Material Bubbles at Room Temperature
Junze Zhou, John Thomas, Thomas P. Darlington +4
Excitons in 2D material bubbles-nanoscale deformations in atomically thin materials, typically exhibiting a dome-like shape-are confined by the strain effect, exhibiting extraordin…
A substitutional quantum defect in WS discovered by high-throughput computational screening and fabricated by site-selective STM manipulation
John C. Thomas, Wei Chen, Yihuang Xiong +21
Point defects in two-dimensional materials are of key interest for quantum information science. However, the space of possible defects is immense, making the identification of high…
Interpretable inverse-designed cavity for on-chip nonlinear and quantum optics
Zhetao Jia, Wayesh Qarony, Jagang Park +9
Inverse design is a powerful tool in wave-physics and in particular in photonics for compact, high-performance devices. To date, applications have mostly been limited to linear sys…
Bose-Einstein Condensation in Gap-Confined Exciton-Polariton States
F. Riminucci, A. Gianfrate, D. Nigro +9
The development of patterned multi-quantum well heterostructures in GaAs/AlGaAs waveguides has recently allowed to achieve exciton-polariton condensation in a topologically protect…
All-silicon quantum light source by embedding an atomic emissive center in a nanophotonic cavity
Walid Redjem, Yertay Zhiyenbayev, Wayesh Qarony +10
Silicon is the most scalable optoelectronic material, and it has revolutionized our lives in many ways. The prospect of quantum optics in silicon is an exciting avenue because it h…
Graphene-driven correlated electronic states in one dimensional defects within WS
Antonio Rossi, John C. Thomas, Johannes T. Küchle +19
Tomonaga-Luttinger liquid (TLL) behavior in one-dimensional systems has been predicted and shown to occur at semiconductor-to-metal transitions within two-dimensional materials. Re…
Carrier and Phonon Dynamics in Multilayer WSe2 captured by Extreme Ultraviolet Transient Absorption Spectroscopy
Juwon Oh, Hung-Tzu Chang, Christopher T. Chen +3
Carrier and phonon dynamics in a multilayer WSe2 film are captured by extreme ultraviolet (XUV) transient absorption (TA) spectroscopy at the W N6,7, W O2,3, and Se M4,5 edges (30-…
Fabrication of Nanostructured GaAs/AlGaAs Waveguide for Low-Density Polariton Condensation from a Bound State in the Continuum
F. Riminucci, V. Ardizzone, L. Francaviglia +13
Exciton-polaritons are hybrid light-matter states that arise from strong coupling between an exciton resonance and a photonic cavity mode. As bosonic excitations, they can undergo…
Elucidating the local atomic and electronic structure of amorphous oxidized superconducting niobium films
Thomas F. Harrelson, Evan Sheridan, Ellis Kennedy +8
Qubits made from superconducting materials are a mature platform for quantum information science application such as quantum computing. However, materials-based losses are now a li…
Exciton self-trapping causes picoseconds recombination in metal-organic chalcogenides hybrid quantum wells
Christoph Kastl, Adam M. Schwartzberg, Lorenzo Maserati
Metal-organic species can be designed to self-assemble in large-scale, atomically defined, supramolecular architectures. Hybrid quantum wells, where inorganic two-dimensional (2D)…
Coupled Valence Carrier and Core-Exciton Dynamics in WS Probed by Few-Femtosecond Extreme Ultraviolet Transient Absorption Spectroscopy
Hung-Tzu Chang, Alexander Guggenmos, Christopher T. Chen +7
Few-femtosecond extreme ultraviolet (XUV) transient absorption spectroscopy, performed with optical 500-1000 nm supercontinuum and broadband XUV pulses (30-50 eV), simultaneously p…
Vibrational relaxation dynamics in layered perovskite quantum wells
Li Na Quan, Yoonjae Park, Peijun Guo +8
Organic-inorganic layered perovskites are two-dimensional quantum wells with layers of lead-halide octahedra stacked between organic ligand barriers. The combination of their diele…
Localization and reduction of superconducting quantum coherent circuit losses
M. Virginia P. Altoé, Archan Banerjee, Cassidy Berk +16
Quantum sensing and computation can be realized with superconducting microwave circuits. Qubits are engineered quantum systems of capacitors and inductors with non-linear Josephson…
Source noise suppression in attosecond transient absorption spectroscopy by edge-pixel referencing
Romain Géneaux, Hung-Tzu Chang, Adam M. Schwartzberg +1
Attosecond transient absorption spectroscopy (ATAS) is used to observe photoexcited dynamics with outstanding time resolution. The main experimental challenge of this technique is…
How Substitutional Point Defects in Two-Dimensional WS Induce Charge Localization, Spin-Orbit Splitting, and Strain
Bruno Schuler, Jun-Ho Lee, Christoph Kastl +13
Control of impurity concentrations in semiconducting materials is essential to device technology. Because of their intrinsic confinement, the properties of two-dimensional semicond…
Long-Range Exciton Diffusion in Two-Dimensional Assemblies of Cesium Lead Bromide Perovskite Nanocrystals
Erika Penzo, Anna Loiudice, Edward S. Barnard +11
Förster Resonant Energy Transfer (FRET)-mediated exciton diffusion through artificial nanoscale building block assemblies could be used as a new optoelectronic design element to tr…
Characterizing Transition-Metal Dichalcogenide Thin-Films using Hyperspectral Imaging and Machine Learning
Brian Shevitski, Christopher T. Chen, Christoph Kastl +4
Atomically thin polycrystalline transition-metal dichalcogenides (TMDs) are relevant to both fundamental science investigation and applications. TMD thin-films present uniquely dif…
Electrically driven photon emission from individual atomic defects in monolayer WS2
Bruno Schuler, Katherine A. Cochrane, Christoph Kastl +7
Optical quantum emitters are a key component of quantum devices for metrology and information processing. In particular, atomic defects in 2D materials can operate as optical quant…
Identifying substitutional oxygen as a prolific point defect in monolayer transition metal dichalcogenides with experiment and theory
Sara Barja, Sivan Refaely-Abramson, Bruno Schuler +17
Chalcogen vacancies are considered to be the most abundant point defects in two-dimensional (2D) transition-metal dichalcogenide (TMD) semiconductors, and predicted to result in de…
Large spin-orbit splitting of deep in-gap defect states of engineered sulfur vacancies in monolayer WS2
Bruno Schuler, Diana Y. Qiu, Sivan Refaely-Abramson +10
Structural defects in 2D materials offer an effective way to engineer new material functionalities beyond conventional doping in semiconductors. Specifically, deep in-gap defect st…
Carrier Lifetimes in a III-V-N Intermediate Band Semiconductor
J. N. Heyman, A. M. Schwartzberg, K. M. Yu +5
We have used transient absorption spectroscopy to measure carrier lifetimes in the multiband band semiconductor GaPAsN. These measurements probe the electron populations in the con…
Experimental and ab initio ultrafast carrier dynamics in plasmonic nanoparticles
Ana M. Brown, Ravishankar Sundararaman, Prineha Narang +3
Ultrafast pump-probe measurements of plasmonic nanostructures probe the non-equilibrium behavior of excited carriers, which involves several competing effects obscured in typical e…
Raman signal-enhancement and broadening with graphene-coated diamond-shape nano-antennas
Charilaos Paraskevaidis, Tevye Kuykendall, Mauro Melli +6
We used broad-band diamond-shape antennas, whose bandwidth could cover the frequency range between the pump laser and the scattered modes, in conjunction with uniformly deposited g…