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Topological phase detection through high-harmonic spectroscopy in extended Su-Schrieffer-Heeger chains
Mohit Lal Bera, Jessica O. de Almeida, Marlena Dziurawiec +5
Su-Schrieffer-Heeger (SSH) chains are paradigmatic examples of 1D topological insulators hosting zero-energy edge modes when the bulk of the system has a non-zero topological windi…
Detecting Majorana Zero Modes via Strong Field Dynamics
Niccolò Baldelli, Utso Bhattacharya, Daniel González-Cuadra +2
We propose a protocol to detect topological phase transitions of one-dimensional -wave superconductors from their harmonic emission spectrum in strong fields. Specifically, we i…
Linking topological features of the Hofstadter model to optical diffraction figures
Francesco Di Colandrea, Alessio D'Errico, Maria Maffei +6
In two, three and even four spatial dimensions, the transverse responses experienced by a charged particle on a lattice in a uniform magnetic field are fully controlled by topologi…
Tracing non-Abelian anyons via impurity particles
Niccolò Baldelli, Bruno Juliá-Díaz, Utso Bhattacharya +2
Non-Abelian excitations are an interesting feature of many fractional quantum Hall phases, including those phases described by the Moore-Read (or Pfaffian) wave function. However,…
Topological properties of the long-range Kitaev chain with Aubry-André-Harper modulation
Joana Fraxanet, Utso Bhattacharya, Tobias Grass +3
We present a detailed study of the topological properties of the Kitaev chain with long-range pairing terms and in the presence of an Aubry-André-Harper on-site potential. Specific…
Fermionic Chern insulator from twisted light with linear polarization
Utso Bhattacharya, Swati Chaudhary, Tobias Grass +3
The breaking of time-reversal symmetry is a crucial ingredient to topological bands. It can occur intrisically in materials with magnetic order, or be induced by external fields, s…
Fractional angular momentum and anyon statistics of impurities in Laughlin liquids
Tobias Graß, Bruno Juliá-Díaz, Niccolò Baldelli +2
The elementary excitations of a fractional quantum Hall liquid are quasiparticles or quasiholes which are neither bosons nor fermions, but so-called anyons. Here we study impurity…
Bulk detection of time-dependent topological transitions in quenched chiral models
Alessio D'Errico, Francesco Di Colandrea, Raouf Barboza +5
The topology of one-dimensional chiral systems is captured by the winding number of the Hamiltonian eigenstates. Here we show that this invariant can be read-out by measuring the m…
Circular dichroism in high-order harmonic generation: Heralding topological phases and transitions in Chern insulators
Alexis Chacón, Dasol Kim, Wei Zhu +10
Topological materials are of interest to both fundamental science and advanced technologies, because topological states are robust with respect to perturbations and dissipation. Ex…
Detection of Zak phases and topological invariants in a chiral quantum walk of twisted photons
F. Cardano, A. D'Errico, A. Dauphin +9
Topological insulators are fascinating states of matter exhibiting protected edge states and robust quantized features in their bulk. Here, we propose and validate experimentally a…
Wannier-Bloch approach to localization in high harmonics generation in solids
Edyta N. Osika, Alexis Chacón, Lisa Ortmann +7
Emission of high-order harmonics from solids provides a new avenue in attosecond science. On one hand, it allows to investigate fundamental processes of the non-linear response of…
Artificial graphene as a tunable Dirac material
Marco Polini, Francisco Guinea, Maciej Lewenstein +2
Artificial honeycomb lattices offer a tunable platform to study massless Dirac quasiparticles and their topological and correlated phases. Here we review recent progress in the des…
Non-Abelian optical lattices: Anomalous quantum Hall effect and Dirac Fermions
N. Goldman, A. Kubasiak, A. Bermudez +3
We study the properties of an ultracold Fermi gas loaded in an optical square lattice and subjected to an external and classical non-Abelian gauge field. We show that this system c…
Ultracold atomic gases in non-Abelian gauge potentials: The case of constant Wilson loop
N. Goldman, A. Kubasiak, P. Gaspard +1
Nowadays it is experimentally feasible to create artificial, and in particular, non-Abelian gauge potentials for ultracold atoms trapped in optical lattices. Motivated by this fact…
Ultracold atomic gas in non-Abelian "magnetic" fields: the quantum Hall effect supremacy
N. Goldman, A. Kubasiak, P. Gaspard +1
Nowadays it is experimentally feasible to create artificial, and in particular, non-Abelian gauge potentials for ultracold atoms trapped in optical lattices. Motivated by this fact…
Predicting spinor condensate dynamics from simple principles
M. Moreno-Cardoner, J. Mur-Petit, M. Guilleumas +3
We study the spin dynamics of quasi-one-dimensional F=1 condensates both at zero and finite temperatures for arbitrary initial spin configurations. The rich dynamical evolution exh…
Ordered structures in rotating ultracold Bose gases
N. Barberan, M. Lewenstein, K. Osterloh +1
The characterization of small samples of cold bosonic atoms in rotating microtraps has recently attracted increasing interest due to the possibility to deal with a few number of pa…
Dynamics of F=1 87Rb condensates at finite temperatures
Jordi Mur-Petit, Montserrat Guilleumas, Artur Polls +4
We investigate the dynamics of a F=1 spinor Bose-Einstein condensate of 87Rb atoms confined in a quasi-one-dimensional trap both at zero and at finite temperature. At zero temperat…