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Stabilization of Hubbard-Thouless pumps through nonlocal fermionic repulsion
Javier Argüello-Luengo, Manfred J. Mark, Francesca Ferlaino +3
Thouless pumping represents a powerful concept to probe quantized topological invariants in quantum systems. We explore this mechanism in a generalized Rice-Mele Fermi-Hubbard mode…
Phonon-assisted coherent transport of excitations in Rydberg-dressed atom arrays
Arkadiusz Kosior, Servaas Kokkelmans, Maciej Lewenstein +2
Polarons, which arise from the self-trapping interaction between electrons and lattice distortions in a solid, have been known and extensively investigated for nearly a century. Ne…
Higher-order topological Peierls insulator in a two-dimensional atom-cavity system
Joana Fraxanet, Alexandre Dauphin, Maciej Lewenstein +2
In this work, we investigate a two-dimensional system of ultracold bosonic atoms inside an optical cavity, and show how photon-mediated interactions give rise to a plaquette-ordere…
Topological Bogoliubov quasiparticles from Bose-Einstein condensate in a flat band system
Zahra Jalali-Mola, Tobias Grass, Valentin Kasper +2
For bosons with flat energy dispersion, condensation can occur in different symmetry sectors. Here, we consider bosons in a Kagome lattice with -flux hopping, which in the prese…
Topological stripe state in an extended Fermi-Hubbard model
Sergi Julià-Farré, Lorenzo Cardarelli, Maciej Lewenstein +2
Interaction-induced topological systems have attracted a growing interest for their exotic properties going beyond the single-particle picture of topological insulators. In particu…
Frustrated magnets without geometrical frustration in bosonic flux ladders
Luca Barbiero, Josep Cabedo, Maciej Lewenstein +2
We propose a scheme to realize a frustrated Bose-Hubbard model with ultracold atoms in an optical lattice that comprises the frustrated spin-1/2 quantum XX model. Our approach is b…
Accelerating many-body entanglement generation by dipolar interactions in the Bose-Hubbard model
Marlena Dziurawiec, Tanausú Hernández Yanes, Marcin Płodzień +3
The spin squeezing protocols allow the dynamical generation of massively correlated quantum many-body states, which can be utilized in entanglement-enhanced metrology and technolog…
Flat-band-induced superconductivity in synthetic bilayer optical lattices
Tymoteusz Salamon, Bernhard Irsigler, Debraj Rakshit +3
Stacking two layers of graphene with a relative twist angle gives rise to moiré patterns, which can strongly modify electronic behavior and may lead to unconventional superconducti…
Accessing the topological Mott insulator in cold atom quantum simulators with realistic Rydberg dressing
Lorenzo Cardarelli, Sergi Julià-Farré, Maciej Lewenstein +2
The interplay between many-body interactions and the kinetic energy gives rise to rich phase diagrams hosting, among others, interaction-induced topological phases. These phases ar…
Probing quantum entanglement from magnetic-sublevels populations: beyond spin squeezing inequalities
Guillem Müller-Rigat, Maciej Lewenstein, Irénée Frérot
Spin squeezing inequalities (SSI) represent a major tool to probe quantum entanglement among a collection of few-level atoms, and are based on collective spin measurements and thei…
Topological chiral currents in the Gross-Neveu model extension
E. Tirrito, M. Lewenstein, A. Bermudez
We unveil an interesting connection of Lorentz-violating quantum field theories, studied in the context of the standard model extension, and Hubbard-type models of topological crys…
Revealing the topological nature of the bond order wave in a strongly correlated quantum system
Sergi Julià-Farré, Daniel González-Cuadra, Alexander Patscheider +5
We investigate the topological properties of the bond order wave phase arising in the extended Fermi-Hubbard model. In particular, we uncover a topological sector, which remained e…
Large- Chern insulators: lattice field theory and quantum simulation approaches to correlation effects in the quantum anomalous Hall effect
L. Ziegler, E. Tirrito, M. Lewenstein +2
Four-Fermi quantum field theories in (2+1) dimensions lie among the simplest models in high-energy physics, the understanding of which requires a non-perturbative lattice formulati…
Bound state dynamics in the long-range spin- XXZ model
T. Macrì, L. Lepori, G. Pagano +2
Experimental platforms based on trapped ions, cold molecules, and Rydberg atoms have made possible the investigation of highly-nonlocal spin- Hamiltonians with long-range co…
Sub-nK thermometry of an interacting -dimensional homogeneous Bose gas
Muhammad Miskeen Khan, Mohammad Mehboudi, Hugo Tercas +2
We propose experimentally feasible means for non-destructive thermometry of homogeneous Bose Einstein condensates in different spatial dimensions (). Our impurity ba…
Cold atoms meet lattice gauge theory
Monika Aidelsburger, Luca Barbiero, Alejandro Bermudez +19
The central idea of this review is to consider quantum field theory models relevant for particle physics and replace the fermionic matter in these models by a bosonic one. This is…
Topological quantum critical points in the extended Bose-Hubbard model
Joana Fraxanet, Daniel González-Cuadra, Tilman Pfau +3
The combination of topology and quantum criticality can give rise to an exotic mix of counterintuitive effects. Here, we show that unexpected topological properties take place in a…
Supersolid-Superfluid phase separation in the extended Bose-Hubbard model
Korbinian Kottmann, Andreas Haller, Antonio Acín +2
Recent studies have suggested a new phase in the extended Bose-Hubbard model in one dimension at integer filling [1,2]. In this work, we show that this new phase is phase-separated…
Unsupervised machine learning of topological phase transitions from experimental data
Niklas Käming, Anna Dawid, Korbinian Kottmann +4
Identifying phase transitions is one of the key challenges in quantum many-body physics. Recently, machine learning methods have been shown to be an alternative way of localising p…
Correlated Chern insulators in two-dimensional Raman lattices: a cold-atom regularization of strongly-coupled four-Fermi field theories
L. Ziegler, E. Tirrito, M. Lewenstein +2
We show that ultra-cold atoms with synthetic spin-orbit coupling in Raman lattices can be used as versatile quantum simulators to explore the connections between correlated Chern i…
Clustered Superfluids in the One Dimensional Bose-Hubbard model with extended correlated hopping
Julia Stasińska, Omjyoti Dutta, Luca Barbiero +2
Bosonic lattice systems with non-trivial interactions represent an intriguing platform to study exotic phases of matter. Here, we study the effects of extended correlated hopping p…
Devil's staircase of topological Peierls insulators and Peierls supersolids
Titas Chanda, Daniel González-Cuadra, Maciej Lewenstein +2
We consider a mixture of ultracold bosonic atoms on a one-dimensional lattice described by the XXZ-Bose-Hubbard model, where the tunneling of one species depends on the spin state…
Universal quantum computation and quantum error correction with ultracold atomic mixtures
Valentin Kasper, Daniel González-Cuadra, Apoorva Hegde +7
Quantum information platforms made great progress in the control of many-body entanglement and the implementation of quantum error correction, but it remains a challenge to realize…
Preparation of the 1/2-Laughlin state with atoms in a rotating trap
Bárbara Andrade, Valentin Kasper, Maciej Lewenstein +2
Fractional quantum Hall systems are among the most exciting strongly correlated systems. Accessing them microscopically via quantum simulations with ultracold atoms would be an imp…