1.4k citations · 3.5k across the 17 of their papers we have counts for
17 papers
Phonon-assisted inter-valley scattering determines ultrafast exciton dynamics in MoSe bilayers
Sophia Helmrich, Kevin Sampson, Di Huang +10
While valleys (energy extrema) are present in all band structures of solids, their preeminent role in determining exciton resonances and dynamics in atomically thin transition meta…
Collective scattering from quantum dots in a photonic crystal waveguide
Joel Q. Grim, Ian Welland, Samuel G. Carter +7
We demonstrate scattering of laser light from two InAs quantum dots coupled to a photonic crystal waveguide, which is achieved by strain-tuning the optical transitions of the dots…
Enhanced spin coherence at the sweet spot of a self-assembled quantum dot molecule
Kha X. Tran, Allan S. Bracker, Michael K. Yates +2
A pair of coupled dots with one electron in each dot can provide improvements in spin coherence, particularly at an electrical bias called the sweet spot, but few measurements have…
Coherent population trapping combined with cycling transitions for quantum dot hole spins using triplet trion states
Samuel G. Carter, Stefan C. Badescu, Allan S. Bracker +4
Optical spin rotations and cycling transitions for measurement are normally incompatible in quantum dots, presenting a fundamental problem for quantum information applications. Her…
Moiré and beyond in transition metal dichalcogenide twisted bilayers
Kha Tran, Junho Choi, Akshay Singh
Fabricating van der Waals (vdW) bilayer heterostructures (BL-HS) by stacking the same or different two-dimensional (2D) layers, offers a unique physical system with rich electronic…
Twist Angle Dependent Interlayer Exciton Lifetimes in van der Waals Heterostructures
Junho Choi, Matthias Florian, Alexander Steinhoff +15
In van der Waals (vdW) heterostructures formed by stacking two monolayers of transition metal dichalcogenides, multiple exciton resonances with highly tunable properties are formed…
Moiré Potential Impedes Interlayer Exciton Diffusion in van der Waals Heterostructures
Junho Choi, Wei-Ting Hsu, Li-Syuan Lu +16
The properties of van der Waals (vdW) heterostructures are drastically altered by a tunable moiré superlattice arising from periodic variations of atomic alignment between the laye…
Microsecond Valley Lifetime of Defect-Bound Excitons in Monolayer WSe
Galan Moody, Kha Tran, Xiaobo Lu +6
In atomically thin two-dimensional semiconductors such as transition metal dichalcogenides (TMDs), controlling the density and type of defects promises to be an effective approach…
Moiré Excitons in Van der Waals Heterostructures
Kha Tran, Galan Moody, Fengcheng Wu +19
In van der Waals (vdW) heterostructures formed by stacking two monolayer semiconductors, lattice mismatch or rotational misalignment introduces an in-plane moiré superlattice. Whil…
Biexciton fine structure in monolayer transition metal dichalcogenides
Alexander Steinhoff, Matthias Florian, Akshay Singh +8
The optical properties of atomically thin transition metal dichalcogenide (TMDC) semiconductors are shaped by the emergence of correlated many-body complexes due to strong Coulomb…
Disorder Dependent Valley Properties in Monolayer WSe2
Kha Tran, Akshay Singh, Joe Seifert +7
We investigate the effect on disorder potential on exciton valley polarization and valley coherence in monolayer WSe2. By analyzing polarization properties of photoluminescence, th…
Trion Valley Coherence in Monolayer Semiconductors
Kai Hao, Lixiang Xu, Fengcheng Wu +8
The emerging field of valleytronics aims to exploit the valley pseudospin of electrons residing near Bloch band extrema as an information carrier. Recent experiments demonstrating…
Neutral and Charged Inter-Valley Biexcitons in Monolayer MoSe
Kai Hao, Lixiang Xu, Judith F. Specht +10
In atomically thin transition metal dichalcogenides (TMDs), reduced dielectric screening of the Coulomb interaction leads to strongly correlated many-body states, including exciton…
Long-Lived Valley Polarization of Intra-Valley Trions in Monolayer WSe2
Akshay Singh, Kha Tran, Mirco Kolarczik +9
We investigate valley dynamics associated with trions in monolayer tungsten diselenide (WSe2) using polarization resolved two-color pump-probe spectroscopy. When tuning the pump an…
Coherent and Incoherent Coupling Dynamics between Neutral and Charged Excitons in Monolayer MoSe2
Kai Hao, Lixiang Xu, Philipp Nagler +7
The optical properties of semiconducting transition metal dichalcogenides are dominated by both neutral excitons (electron-hole pairs) and charged excitons (trions) that are stable…
Trion Formation Dynamics in Monolayer Transition Metal Dichalcogenides
Akshay Singh, Galan Moody, Kha Tran +13
We report charged exciton (trion) formation dynamics in doped monolayer transition metal dichalcogenides (TMDs), specifically molybdenum diselenide (MoSe2), using resonant two-colo…
Intrinsic Exciton Linewidth in Monolayer Transition Metal Dichalcogenides
Galan Moody, Chandriker Kavir Dass, Kai Hao +10
Monolayer transition metal dichalcogenides feature Coulomb-bound electron-hole pairs (excitons) with exceptionally large binding energy and coupled spin and valley degrees of freed…