2.8k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Institució Catalana de Recerca i Estudis AvançatsES773 papers
- Institute for High Energy PhysicsES705 papers
- University College LondonGB685 papers
- Centre National de la Recherche ScientifiqueFR684 papers
- University of MichiganUS663 papers
- SLAC National Accelerator LaboratoryUS659 papers
- Universidad Autónoma de MadridES657 papers
- University of ChicagoUS651 papers
- The Ohio State UniversityUS634 papers
- Institute of Photonic SciencesES608 papers
- University of ArizonaUS605 papers
- Ludwig-Maximilians-Universität MünchenDE602 papers
15 papers · 2 filters
Loading Ultracold Gases in Topological Floquet Bands: Current and Center-of-Mass Responses
A. Dauphin, D. -T. Tran, M. Lewenstein +1
Topological band structures can be designed by subjecting lattice systems to time-periodic modulations, as was recently demonstrated in cold atoms and photonic crystals. However, c…
Optical lattices as a tool to study defect-induced superfluidity
Grigory E. Astrakharchik, Konstantin V. Krutitsky, Maciej Lewenstein +2
We study the superfluid response, the energetic and structural properties of a one-dimensional ultracold Bose gas in an optical lattice of arbitrary strength. We use the Bose-Fermi…
Different models of gravitating Dirac fermions in optical lattices
Alessio Celi
In this paper I construct the naive lattice Dirac Hamiltonian describing the propagation of fermions in a generic 2D optical metric for different lattice and flux-lattice geometrie…
Exploring Interacting Topological Insulators with Ultracold Atoms: the Synthetic Creutz-Hubbard Model
J. Jünemann, A. Piga, S. -J. Ran +3
Understanding the robustness of topological phases of matter in the presence of strong interactions, and synthesising novel strongly-correlated topological materials, lie among the…
Observation of Stable Jones-Roberts Solitons in Bose-Einstein Condensates
Nadine Meyer, Harry Proud, Marisa Perea-Ortiz +6
We experimentally generate two-dimensional Jones-Roberts solitons in a three-dimensional atomic Bose-Einstein condensate by imprinting a triangular phase pattern. By monitoring the…
Proximity effects in cold atom artificial graphene
Tobias Grass, Ravindra W. Chhajlany, Leticia Tarruell +2
Cold atoms in an optical lattice with brick-wall geometry have been used to mimic graphene, a two-dimensional material with characteristic Dirac excitations. Here we propose to bri…
Rotation of cold molecular ions inside a Bose-Einstein condensate
Bikashkali Midya, Michał Tomza, Richard Schmidt +1
We use recently developed angulon theory [Phys. Rev. Lett. 114, 203001 (2015)] to study the rotational spectrum of a cyanide molecular anion immersed into Bose-Einstein condensates…
Synthetic Unruh effect in cold atoms
Javier Rodriguez-Laguna, Leticia Tarruell, Maciej Lewenstein +1
We propose to simulate a Dirac field near an event horizon using ultracold atoms in an optical lattice. Such a quantum simulator allows for the observation of the celebrated Unruh…
Realization of uniform synthetic magnetic fields by periodically shaking an optical square lattice
C. E. Creffield, G. Pieplow, F. Sols +1
Shaking a lattice system, by modulating the location of its sites periodically in time, is a powerful method to create effective magnetic fields in engineered quantum systems, such…
Robustness of discrete semifluxons in closed Bose-Hubbard chains
A. Gallemí, M. Guilleumas, J. Martorell +3
We present the properties of the ground state and low-energy excitations of Bose-Hubbard chains with a geometry that varies from open to closed and with a tunable twisted link. In…
Topological bound states of a quantum walk with cold atoms
Samuel Mugel, Alessio Celi, Pietro Massignan +3
We suggest a method for engineering a quantum walk, with cold atoms as walkers, which presents topologically non-trivial properties. We derive the phase diagram, and show that we a…
Modified spin-wave theory and spin liquid behavior of cold bosons on an inhomogeneous triangular lattice
Alessio Celi, Tobias Grass, Andrew J. Ferris +5
Ultracold bosons in a triangular lattice are a promising candidate for observing quantum spin liquid behavior. Here we investigate, for such system, the role of a harmonic trap giv…
Observation of Quantum Phase Transitions with Parity-Symmetry Breaking and Hysteresis
A. Trenkwalder, G. Spagnolli, G. Semeghini +8
Symmetry-breaking quantum phase transitions play a key role in several condensed matter, cosmology and nuclear physics theoretical models. Its observation in real systems is often…
Quantum optics and frontiers of physics: The third quantum revolution
Alessio Celi, Anna Sanpera, Veronica Ahufinger +1
The year 2015 was the International Year of Light. It marked, however, also the 20th anniversary of the first observation of Bose-Einstein condensation in atomic vapors by Eric Cor…
Toolbox for Abelian lattice gauge theories with synthetic matter
Omjyoti Dutta, Luca Tagliacozzo, Maciej Lewenstein +1
Fundamental forces of Nature are described by field theories, also known as gauge theories, based on a local gauge invariance. The simplest of them is quantum electrodynamics (QED)…