Now showing items 1-20 of 20

  • Anderson cross-localization 

    Stützer, Simon; Kartashov, Yaroslav V.; Vysloukh, Victor A.; Tünnermann, A.; Nolte, Stefan; Lewenstein, Maciej; Torner Sabata, Lluís; Szameit, Alexander (2012)
    Article
    Restricted access - publisher's policy
    We report Anderson localization in two-dimensional optical waveguide arrays with disorder in waveguide separation introduced along one axis of the array, in an uncorrelated fashion for each waveguide row. We show that the ...
  • Bose polarons at finite temperature and strong coupling 

    Guenther, Nils Eric; Massignan, Pietro Alberto; Lewenstein, Maciej; Bruun, Georg (2018-02-01)
    Article
    Open Access
    A mobile impurity coupled to a weakly interacting Bose gas, a Bose polaron, displays several interesting effects. While a single attractive quasiparticle is known to exist at zero temperature, we show here that the spectrum ...
  • Carrier-Wave Rabi-Flopping Signatures in High-Order Harmonic Generation for Alkali Atoms 

    Ciappina, M. F; Pérez-Hernández, J. A.; Landsman, A. S.; Zimmermann, T.; Lewenstein, Maciej; Roso, L.; Krausz, F. (APS Physics, 2015-04-08)
    Article
    Open Access
    We present a theoretical investigation of carrier-wave Rabi flopping in real atoms by employing numerical simulations of high-order harmonic generation (HHG) in alkali species. Given the short HHG cutoff, related to the ...
  • Detection of Zak phases and topological invariants in a chiral quantum walk of twisted photons 

    Cardano, Filippo; D'Errico, Alessio; dauphin, Alexandre; Maffei, Maria; Piccirillo, Bruno; de Lisio, Corrado; de Filippis, Guido; Cataudella, Vittorio; Santamato, Enrico; Marrucci, Lorenzo; Lewenstein, Maciej; Massignan, Pietro Alberto (2017)
    Article
    Open Access
    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 method to detect topological properties ...
  • High-order harmonic generation driven by plasmonic fields: a new route towards the generation of UV and XUV photons? 

    Ciappina, M. F.; Pérez-Hernández, J. A.; Roso, L.; Zaïr, A.; Lewenstein, Maciej (IOP, 2015-04-16)
    Article
    Open Access
    We present theoretical investigations of high-order harmonic generation (HHG) resulting from the interaction of noble gases with different kind of temporally and spatially synthesized laser fields. These fields, based on ...
  • Measuring Chern numbers in Hofstadter strips 

    Mugel, Samuel; dauphin, Alexandre; Massignan, Pietro Alberto; Tarruell, Leticia; Lewenstein, Maciej; Lobo, Carlos; Celi, Alessio (2017-08-15)
    Article
    Open Access
    Topologically non-trivial Hamiltonians with periodic boundary conditions are characterized by strictly quantized invariants. Open questions and fundamental challenges concern their existence, and the possibility of measuring ...
  • Nonlocality in many-body quantum systems detected with two-body correlators 

    Tura, J.; Augusiak, Remigiusz; Sainz, A. B.; Lücke, B.; Klempt, C.; Lewenstein, Maciej; Acin, Antonio (Science Direct, 2015-07-30)
    Article
    Open Access
    Contemporary understanding of correlations in quantum many-body systems and in quantum phase transitions is based to a large extent on the recent intensive studies of entanglement in many-body systems. In contrast, much ...
  • Non-standard Hubbard models in optical lattices: a review 

    Dutta, Omjyoti; Gajda, Mariusz; Lewenstein, Maciej; Lühmann, Dirk-Sören; Malomed, Boris A.; Sowiński, Tomasz; Zakrzewski, Jakub (IOP, 2015-05-28)
    Article
    Open Access
    Originally, the Hubbard model was derived for describing the behavior of strongly correlated electrons in solids. However, for over a decade now, variations of it have also routinely been implemented with ultracold atoms ...
  • One-dimensional Bose gas in optical lattices of arbitrary strength 

    Astrakharchik, Grigori; Krutitsky, K.V.; Lewenstein, Maciej; Mazzanti Castrillejo, Fernando Pablo (2016-02-08)
    Article
    Open Access
    One-dimensional Bose gas with contact interaction in optical lattices at zero temperature is investigated by means of the exact diffusion Monte Carlo algorithm. The results obtained from the fundamental continuous model ...
  • Optical lattices as a tool to study defect-induced superfluidity 

    Astrakharchik, Grigori; Krutitsky, K.V.; Lewenstein, Maciej; Mazzanti Castrillejo, Fernando Pablo; Boronat Medico, Jordi (AMER PHYSICAL SOC, 2017-09-05)
    Article
    Open Access
    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 mapping in the limit of infinitely large ...
  • Progress towards a unified approach to entanglement distribution 

    Streltsov, Alexander; Augusiak, Remigiusz; Demianowicz, Maciej; Lewenstein, Maciej (APS, 2015-07-30)
    Article
    Open Access
    Entanglement distribution is key to the success of secure communication schemes based on quantum mechanics, and there is a strong need for an ultimate architecture able to overcome the limitations of recent proposals such ...
  • Quantum Brownian motion with inhomogeneous damping and diffusion 

    Massignan, Pietro; Lampo, Aniello; Wehr, Jan; Lewenstein, Maciej (APS Physics, 2015-03-23)
    Article
    Open Access
    We analyze the microscopic model of quantum Brownian motion, describing a Brownian particle interacting with a bosonic bath through a coupling which is linear in the creation and annihilation operators of the bath, but may ...
  • Quantum mechanics: No more fields 

    Lewenstein, Maciej (Nature Publishing group, 2015-01-05)
    Article
    Open Access
    A self-accelerating electronic wave packet can acquire a phase akin to the Aharonov–Bohm effect, but in the absence of a magnetic field.
  • Quantum simulation of non-trivial topology 

    Boada, Octavi; Celi, Alessio; Rodríguez-Laguna, Javier; Latorre, José I.; Lewenstein, Maciej (IOP, 2015-04-15)
    Article
    Open Access
    We propose several designs to simulate quantum many-body systems in manifolds with a non-trivial topology. The key idea is to create a synthetic lattice combining real-space and internal degrees of freedom via a suitable ...
  • Soliton eigenvalue control in optical lattices 

    Kartashov, Yaroslav V.; Crasovan, L C; Zelenina, A; Vyslokh, V V; Sanpera, Anna; Lewenstein, Maciej; Torner Sabata, Lluís (2004-09)
    Article
    Restricted access - publisher's policy
    We address the dynamics of higher-order solitons in optical lattices, and predict their self-splitting into the set of their single-soliton constituents. The splitting is induced by the potential introduced by the lattice, ...
  • Synthetic magnetic fluxes and topological order in one-dimensional spin systems 

    Graß, Tobias; Muschik, Christine; Celi, Alessio; Chhajlany, Ravindra W.; Lewenstein, Maciej (APS Physics, 2015-06-11)
    Article
    Open Access
    Engineering topological quantum order has become a major field of physics. Many advances have been made by synthesizing gauge fields in cold atomic systems. Here we carry over these developments to other platforms which ...
  • Tensor Networks for Lattice Gauge Theories with continuous groups 

    Tagliacozzo, Luca; Celi, Alessio; Lewenstein, Maciej (ACS Publications, 2014-11-06)
    Article
    Open Access
    We discuss how to formulate lattice gauge theories in the tensor-network language. In this way, we obtain both a consistent-truncation scheme of the Kogut-Susskind lattice gauge theories and a tensornetwork variational ...
  • Terahertz field control of in-plane orbital order in La0.5Sr1.5MnO4 

    Miller, Timothy A.; Chhajlany, Ravindra W.; Tagliacozzo, Luca; Green, Bertram; Kovalev, Sergey; Prabhakaran, Dharmalingam; Lewenstein, Maciej; Gensch, Michael; Wall, Simon (Nature Publishing Group, 2015-09-18)
    Article
    Open Access
    In-plane anisotropic ground states are ubiquitous in correlated solids such as pnictides, cuprates and manganites. They can arise from doping Mott insulators and compete with phases such as superconductivity; however, their ...
  • Topological characterization of chiral models through their long time dynamics 

    Maffei, Maria; dauphin, Alexandre; Cardano, Filippo; Lewenstein, Maciej; Massignan, Pietro Alberto (2018-01-16)
    Article
    Open Access
    We study chiral models in one spatial dimension, both static and periodically driven. We demonstrate that their topological properties may be read out through the long time limit of a bulk observable, the mean chiral ...
  • Weak Ergodicity Breaking of Receptor Motion in Living Cells Stemming from Random Diffusivity 

    Manzo, Carlo; Torreno-Pina, Juan A.; Massignan, Pietro; Lapeyre, Gerald J.; Lewenstein, Maciej; García Parajo, María F. (APS Physics, 2015-02-25)
    Article
    Open Access
    Molecular transport in living systems regulates numerous processes underlying biological function. Although many cellular components exhibit anomalous diffusion, only recently has the subdiffusive motion been associated ...