2.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- ETH ZurichCH325 papers
- Paul Scherrer InstituteCH35 papers
- Harvard UniversityUS28 papers
- Centre National de la Recherche ScientifiqueFR26 papers
- Max Planck Institute of Quantum OpticsDE20 papers
- Swiss Light Source18 papers
- École Polytechnique Fédérale de LausanneCH17 papers
- Institute for Theoretical PhysicsCH17 papers
- Laboratory for Solid State PhysicsCH14 papers
- Ludwig-Maximilians-Universität MünchenDE13 papers
- National Institute for Materials ScienceJP12 papers
- University of GenevaCH12 papers
330 papers
A phonon laser in the quantum regime
T. Behrle, T. L. Nguyen, F. Reiter +7
We demonstrate a trapped-ion system with two competing dissipation channels, implemented independently on two ion species co-trapped in a Paul trap. By controlling coherent spin-os…
Quantum anomaly detection in the latent space of proton collision events at the LHC
Vasilis Belis, Kinga Anna Woźniak, Ema Puljak +7
The ongoing quest to discover new phenomena at the LHC necessitates the continuous development of algorithms and technologies. Established approaches like machine learning, along w…
Reversal of quantised Hall drifts at non-interacting and interacting topological boundaries
Zijie Zhu, Marius Gächter, Anne-Sophie Walter +2
The transport properties of gapless edge modes at boundaries between topologically distinct domains are of fundamental and technological importance. Therefore, it is crucial to gai…
Trapping and Ground-State Cooling of a Single H
N. Schwegler, D. Holzapfel, M. Stadler +4
We demonstrate co-trapping and sideband cooling of a H - Be ion pair in a cryogenic Paul trap. We study the chemical lifetime of H and its dependence on the app…
Microscopic theory of polariton-polariton interactions
Esben R. Christensen, Arturo Camacho-Guardian, Ovidiu Cotlet +4
We develop a comprehensive theoretical model for the interaction strength between a pair of exciton-polaritons in microcavity devices. Ab initio numerical calculations for dipolar…
THz optical beat-note detection with a fast Hot Electron Bolometer operating up to 31 GHz
G. Torrioli, A. Forrer, M. Beck +10
We study the performance of an hot-electron bolometer (HEB) operating at THz frequencies based on superconducting niobium nitride films. We report on the voltage response of the de…
Direct observation of geometric phase in dynamics around a conical intersection
Christophe H. Valahu, Vanessa C. Olaya-Agudelo, Ryan J. MacDonell +9
Conical intersections are ubiquitous in chemistry and physics, often governing processes such as light harvesting, vision, photocatalysis, and chemical reactivity. They act as funn…
Coherently averaged dual-comb spectroscopy with a low-noise and high-power free-running gigahertz dual-comb laser
C. R. Phillips, B. Willenberg, A. Nussbaum-Lapping +4
We present a new type of dual optical frequency comb source capable of scaling applications to high measurement speeds while combining high average power, ultra-low noise operation…
Crafting the dynamical structure of synchronization by harnessing bosonic multilevel cavity QED
Riccardo J. Valencia-Tortora, Shane P. Kelly, Tobias Donner +3
Many-body cavity QED experiments are established platforms to tailor and control the collective responses of ensembles of atoms, interacting through one or more common photonic mod…
Superfluid signatures in a dissipative quantum point contact
Meng-Zi Huang, Jeffrey Mohan, Anne-Maria Visuri +6
We measure superfluid transport of strongly interacting fermionic lithium atoms through a quantum point contact with local, spin-dependent particle loss. We observe that the charac…
Control of an atomic quadrupole transition in a phase-stable standing wave
Alfredo Ricci Vasquez, Carmelo Mordini, Chloé Vérnière +6
Using a single calcium ion confined in a surface-electrode trap, we study the interaction of electric quadrupole transitions with a passively phase-stable optical standing wave fie…
Chiral Pseudo Spin Liquids in Moire Heterostructures
Clemens Kuhlenkamp, Wilhelm Kadow, Atac Imamoglu +1
We propose multi-layer moire structures in strong external magnetic fields as a novel platform for realizing highly-tunable, frustrated Hubbard physics with topological order. Iden…
Impact ionization in low-band-gap semiconductors driven by ultrafast THz excitation: beyond the ballistic regime
Simone Biasco, Florence Burri, Sarah Houver +3
Using two-dimensional THz spectroscopy in combination with numerical models, we investigate the dynamics linked to carrier multiplication caused by high-field THz excitation of the…
Sensitive dependence of the linewidth enhancement factor on electronic quantum effects in quantum cascade lasers
Martin Franckie, Mathieu Bertrand, Jerome Faist
The linewidth enhancement factor (LEF) describes the coupling between amplitude and phase fluctuations in a semiconductor laser, and has recently been shown to be a crucial compone…
Intensity correlations in quantum cascade laser harmonic frequency combs
Tecla Gabbrielli, Natalia Bruno, Nicola Corrias +10
A novel study on harmonic frequency combs emitted by Quantum Cascade Lasers (QCLs) is here presented, demonstrating the presence of intensity correlations between twin modes charac…
Experimental graybox quantum system identification and control
Akram Youssry, Yang Yang, Robert J. Chapman +4
Understanding and controlling engineered quantum systems is key to developing practical quantum technology. However, given the current technological limitations, such as fabricatio…
Thermal Evolution of Dirac Magnons in the Honeycomb Ferromagnet CrBr
S. E. Nikitin, B. Fåk, K. W. Krämer +4
CrBr is an excellent realization of the two-dimensional honeycomb ferromagnet, which offers a bosonic equivalent of graphene with Dirac magnons and topological character. We pe…
50-W average power Ho:YAG SESAM-modelocked thin-disk oscillator at 2.1 um
Sergei Tomilov, Yicheng Wang, Martin Hoffmann +4
Ultrafast laser systems operating with high-average power in the wavelength range from 1.9 um to 3 um are of interest for a wide range of applications for example in spectroscopy,…
Quantisation and its breakdown in a Hubbard-Thouless pump
Anne-Sophie Walter, Zijie Zhu, Marius Gächter +5
Geometric properties of waves and wave functions can explain the appearance of integer-valued observables throughout physics. For example, these 'topological' invariants describe t…
Exceptional Point Singularities in Multi-Section DFB Lasers
Mehran Shahmohammadi, Martin J. Süess, Romain Peretti +4
A laser exhibits both controllable gain and loss and, under proper design conditions, is an ideal non-Hermitian system allowing the direct observation and engineering of spectral s…
Spatially multiplexed single-cavity dual-comb laser
J. Pupeikis, B. Willenberg, S. L. Camenzind +4
Single-cavity dual-comb lasers are a new class of ultrafast lasers which have a wide possible application space including pump-probe sampling, optical ranging, and gas absorption s…
Industrially Microfabricated Ion Trap with 1 eV Trap Depth
S. Auchter, C. Axline, C. Decaroli +12
Scaling trapped-ion quantum computing will require robust trapping of at least hundreds of ions over long periods, while increasing the complexity and functionality of the trap its…
Synchronization of frequency combs by optical injection
Johannes Hillbrand, Mathieu Bertrand, Valentin Wittwer +8
Optical frequency combs based on semiconductor lasers are a promising technology for monolithic integration of dual-comb spectrometers. However, the stabilization of the offset fre…
Solid-State Biased Coherent Detection of Ultra-Broadband Terahertz Pulses for high repetition rate, low pulse energy lasers
Tim Suter, Alessandro Tomasino, Matteo Savoini +3
We report the coherent generation and detection of terahertz (THz) pulses covering the bandwidth of 0.1-9 THz in a high repetition rate, low pulse energy laser system. In this work…