57 citations · 225 across the 17 of their papers we have counts for
17 papers
Industry-ready spin-photon interfaces for hybrid photonic quantum computing
Hêlio Huet, Hubert Lam, Thibaut Pollet +45
Hybrid photonic quantum computers, combining stationary matter qubits and flying photonic qubits, offer an intrinsically networked and resource-efficient route to large-scale, erro…
Mitigating the Transition of SiV in Diamond to an Optically Dark State
Manuel Rieger, Rubek Poudel, Tobias Waldmann +7
Negatively charged silicon vacancy centers in diamond (SiV) are promising for quantum photonic technologies. However, when subject to resonant optical excitation, they can inad…
Second-order Stark shifts exceeding 10GHz in electrically contacted SiV centers in diamond
Manuel Rieger, Nori N. Chavira Leal, Rubek Poudel +7
Negatively charged silicon vacancy centers (SiV) in diamond exhibit excellent spin coherence and optical properties, making them promising candidates for quantum technologies.…
Temperature-Dependent Emission Spectroscopy of Quantum Emitters in Hexagonal Boron Nitride
Mouli Hazra, Manuel Rieger, Anand Kumar +7
Color centers in hexagonal boron nitride (hBN) have attracted significant interest due to their potential applications in future optical quantum technologies. For most applications…
Couplings between Photons and Ensemble of Emitters in a High- Cavity at Mesoscopic Excitation Levels
Chenjiang Qian, Viviana Villafañe, Pedro Soubelet +2
We investigate the coupling between an ensemble of individual emitters and multiple photons in a high- cavity at the mesoscopic excitation level. The master equation theory is u…
Fast optoelectronic charge state conversion of silicon vacancies in diamond
Manuel Rieger, Viviana Villafane, Lina M. Todenhagen +5
Group IV vacancy color centers in diamond are promising spin-photon interfaces with strong potential for applications for photonic quantum technologies. Reliable methods for contro…
Transfer Matrix Model for Emission Profile Optimization of Radial Gratings
Stefan Appel, Viviana Villafane, Jonathan J. Finley +1
Radial Bragg gratings are commonly used to enhance light extraction from quantum emitters, but lack a well-suited, fast simulation method for optimization beyond periodic designs.…
Probing Dark Excitons in Monolayer MoS by NonLinear Two-Photon Spectroscopy
Chenjiang Qian, Viviana Villafañe, Pedro Soubelet +3
We report a new dark exciton in monolayer MoS using second harmonic generation spectroscopy. Hereby, the spectrally dependent second harmonic generation intensity splits into t…
Nonlinear Dispersion Relation and Out-of-Plane Second Harmonic Generation in MoSSe and WSSe Janus Monolayers
Marko M. Petrić, Viviana Villafañe, Paul Herrmann +9
Janus transition metal dichalcogenides are an emerging class of atomically thin materials with engineered broken mirror symmetry that gives rise to long-lived dipolar excitons, Ras…
Lasing of Moiré Trapped MoSe/WSe Interlayer Excitons Coupled to a Nanocavity
Chenjiang Qian, Mirco Troue, Johannes Figueiredo +8
We report lasing of moiré trapped interlayer excitons (IXs) by integrating a pristine hBN-encapsulated MoSe/WSe heterobilayer into a high- () nanophotonic cavity.…
Twist-dependent intra- and interlayer excitons in moire MoSe2 homobilayers
Viviana Villafañe, Malte Kremser, Ruven Hübner +7
Optoelectronic properties of van der Waals homostructures can be selectively engineered by the relative twist angle between layers. Here, we study the twist-dependent moire couplin…
Emitter-Optomechanical Interaction in Ultra-High-Q hBN Nanocavities
Chenjiang Qian, Viviana Villafañe, Martin Schalk +6
Integrating quantum emitters into nanocavities which simultaneously couple to the photonic and mechanical modes is critical for interfacing electron spins, photons and phonons in t…
Coupling of MoS Excitons with Lattice Phonons and Cavity Vibrational Phonons in Hybrid Nanobeam Cavities
Chenjiang Qian, Viviana Villafañe, Marko M. Petrić +3
We report resonant Raman spectroscopy of neutral excitons X and intravalley trions X in hBN-encapsulated MoS monolayer embedded in a nanobeam cavity. By temperature tun…
Unveiling the Zero-Phonon Line of the Boron Vacancy Center by Cavity Enhanced Emission
Chenjiang Qian, Viviana Villafañe, Martin Schalk +11
Negatively charged boron vacancies () in hexagonal boron nitride (hBN) exhibit a broad emission spectrum due to strong electron-phonon coupling and Jahn-Teller mixing of ele…
Three-photon excitation of quantum two-level systems
Viviana Villafañe, Bianca Scaparra, Manuel Rieger +8
We demonstrate that semiconductor quantum dots can be excited efficiently in a resonant three-photon process, whilst resonant two-photon excitation is highly suppressed. Time-depen…
Nonlocal Exciton-Photon Interactions in Hybrid High-Q Beam Nanocavities with Encapsulated MoS Monolayers
Chenjiang Qian, Viviana Villafañe, Pedro Soubelet +7
Atomically thin semiconductors can be readily integrated into a wide range of nanophotonic architectures for applications in quantum photonics and novel optoelectronic devices. We…
Quantum well photoelastic comb for ultra-high frequency cavity optomechanics
V. Villafañe, S. Anguiano, A. E. Bruchhausen +5
Optomechanical devices operated at their quantum limit open novel perspectives for the ultrasensitive determination of mass and displacement, and also in the broader field of quant…