134 citations · 739 across the 22 of their papers we have counts for
23 papers
All-optical switching of nonlinear structured light in crystal-engineered van der Waals materials
Paolo Valisa, Marc Richstaetter, Bianca Sanfilippo +9
The orbital angular momentum (OAM) of light is a discrete, unbounded degree of freedom that underpins mode-multiplexed communications and high-dimensional quantum photonics. Yet, d…
Nonequilibrium dynamics of high energy transitions in monolayer WSe
Oleg Dogadov, Jorge Cervantes-Villanueva, Nicholas Olsen +6
High-energy optical transitions in monolayer transition-metal dichalcogenides exhibit characteristics that are markedly distinct from those of lower-lying band-edge excitons. These…
Excitonic Mott transition without population inversion
Oleg Dogadov, Armando Genco, Allison R. Cadore +12
Exciton dissociation via the excitonic Mott transition (EMT) governs the high-density optical response of semiconductors and sets fundamental limits for optoelectronic devices. The…
Purcell enhancement of photogalvanic currents in a van der Waals plasmonic self-cavity
Xinyu Li, Jesse Hagelstein, Gunda Kipp +23
Cavities provide a means to manipulate the optical and electronic responses of quantum materials by selectively enhancing light-matter interaction at specific frequencies and momen…
Dissecting intervalley coupling mechanisms in monolayer transition metal dichalcogenides
Oleg Dogadov, Henry Mittenzwey, Micol Bertolotti +8
Monolayer (1L) transition metal dichalcogenides (TMDs) provide a unique opportunity to control the valley degree of freedom of optically excited charge carriers due to the spin-val…
Flat band excitons in a three-dimensional supertwisted spiral transition metal dichalcogenide
Yinan Dong, Yuzhou Zhao, Lennart Klebl +19
A new frontier in van der Waals twistronics is the development of three-dimensional (3D) supertwisted materials, where each successive atomic layer rotates by the same angle. While…
Roadmap for Photonics with 2D Materials
F. Javier García de Abajo, D. N. Basov, Frank H. L. Koppens +145
Triggered by the development of exfoliation and the identification of a wide range of extraordinary physical properties in self-standing films consisting of one or few atomic layer…
Tracking the photoinduced dynamics of a dark excitonic state in single-layer WS via resonant Autler-Townes splitting
Angela Montanaro, Francesco Valiera, Francesca Giusti +10
Excitons in a monolayer transition metal dichalcogenide (1L-TMD) are highly bound states characterized by a Rydberg-like spectrum of discrete energy levels. Among these, states wit…
Spatiotemporal imaging of nonlinear optics in van der Waals waveguides
Ding Xu, Zhi Hao Peng, Chiara Trovatello +6
Van der Waals (vdW) semiconductors have emerged as promising platforms for efficient nonlinear optical conversion, including harmonic and entangled photon generation. Although majo…
Femtosecond switching of strong light-matter interactions in microcavities with two-dimensional semiconductors
Armando Genco, Charalambos Louca, Cristina Cruciano +14
Ultrafast all-optical logic devices based on nonlinear light-matter interactions hold the promise to overcome the speed limitations of conventional electronic devices. Strong coupl…
Quasi-phase-matched up- and down-conversion in periodically poled layered semiconductors
Chiara Trovatello, Carino Ferrante, Birui Yang +15
Nonlinear optics lies at the heart of classical and quantum light generation. The invention of periodic poling revolutionized nonlinear optics and its commercial applications by en…
Programmable Nanowrinkle-Induced Room-Temperature Exciton Localization in Monolayer WSe2
Emanuil S. Yanev, Thomas P. Darlington, Sophia A. Ladyzhets +8
Localized states in two-dimensional (2D) transition metal dichalcogenides (TMDCs) have been the subject of intense study, driven by potential applications in quantum information sc…
Measurement principles for quantum spectroscopy of molecular materials with entangled photons
Luca Moretti, Esteban Rojas-Gatjens, Lorenzo Uboldi +8
Nonlinear spectroscopy with quantum entangled photons is an emerging field of research that holds the promise to achieve a superior signal-to-noise ratio and effectively isolate ma…
Strong Coupling of Coherent Phonons to Excitons in Semiconducting Monolayer MoTe
Charles J. Sayers, Armando Genco, Chiara Trovatello +8
The coupling of the electron system to lattice vibrations and their time-dependent control and detection provides unique insight into the non-equilibrium physics of semiconductors.…
Parametric Nonlinear Optics with Layered Materials and Related Heterostructures
O. Dogadov, C. Trovatello, B. Yao +2
Nonlinear optics is of crucial importance in several fields of science and technology with applications in frequency conversion, entangled-photon generation, self-referencing of fr…
Towards compact phase-matched and waveguided nonlinear optics in atomically layered semiconductors
Xinyi Xu, Chiara Trovatello, Fabian Mooshammer +6
Nonlinear frequency conversion provides essential tools for light generation, photon entanglement, and manipulation. Transition metal dichalcogenides (TMDs) possess huge nonlinear…
Nonlinear interactions of dipolar excitons and polaritons in MoS2 bilayers
Charalambos Louca, Armando Genco, Salvatore Chiavazzo +12
Nonlinear interactions between excitons strongly coupled to light are key for accessing quantum many-body phenomena in polariton systems. Atomically-thin two-dimensional semiconduc…
Hot-Carrier Cooling in High-Quality Graphene is Intrinsically Limited by Optical Phonons
Eva A. A. Pogna, Xiaoyu Jia, Alessandro Principi +20
Many promising optoelectronic devices, such as broadband photodetectors, nonlinear frequency converters, and building blocks for data communication systems, exploit photoexcited ch…
Exciton-phonon coupling strength in single-layer MoSe2 at room temperature
Donghai Li, Chiara Trovatello, Stefano Dal Conte +6
Single-layer transition metal dichalcogenides are at the center of an ever increasing research effort both in terms of fundamental physics and applications. Exciton-phonon coupling…
Time-dependent screening explains the ultrafast excitonic signal rise in 2D semiconductors
Valerie Smejkal, Florian Libisch, Alejandro Molina-Sanchez +2
We calculate the time evolution of the transient reflection signal in an MoS monolayer on a SiO/Si substrate using first-principles out-of-equilibrium real-time methods. Ou…
The ultrafast onset of exciton formation in 2D semiconductors
Chiara Trovatello, Florian Katsch, Nicholas J. Borys +11
The equilibrium and non-equilibrium optical properties of single-layer transition metal dichalcogenides (TMDs) are determined by strongly bound excitons. Exciton relaxation dynamic…
Strongly coupled coherent phonons in single-layer MoS
C. Trovatello, H. P. C. Miranda, A. Molina-Sánchez +15
We present a transient absorption setup combining broadband detection over the visible-UV range with high temporal resolution (20fs) which is ideally suited to trigger and de…
Broadband optical parametric amplification by two-dimensional semiconductors
Chiara Trovatello, Andrea Marini, Xinyi Xu +11
Optical parametric amplification is a second-order nonlinear process whereby an optical signal is amplified by a pump via the generation of an idler field. It is the key ingredient…