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author = "Sanchez-Palencia, Laurent"
<< < 1 2 3 4 5 > >>

Found 72 documents, displaying page 2 of 8

Localized and extended states in a disordered trap

Author(s) : Pezzé, Luca , Sanchez-Palencia, Laurent
Description : We study Anderson localization in a disordered potential combined with an inhomogeneous trap. We show that the spectrum displays both localized and extended states, which coexist at intermediate energies. In the region of coexistence, we find that the extended states result from confinement by the t...
Repository : HAL - Hyper Article on Line
Language(s) : English

Localization of Bogoliubov quasiparticles in interacting Bose gases with correlated disorder

Author(s) : Lugan, Pierre , Sanchez-Palencia, Laurent
Description : We study the Anderson localization of Bogoliubov quasiparticles (elementary many-body excitations) in a weakly interacting Bose gas of chemical potential $\mu$ subjected to a disordered potential $V$. We introduce a general mapping (valid for weak inhomogeneous potentials in any dimension) of the Bo...
Repository : HAL - Hyper Article on Line
Language(s) : English

Bose-Einstein Condensates in Optical Quasicrystal Lattices

Author(s) : Sanchez-Palencia, Laurent , Santos, Luis
Description : We analyze the physics of Bose-Einstein condensates confined in 2D quasi-periodic optical lattices, which offer an intermediate situation between ordered and disordered systems. First, we analyze the time-of-flight interference pattern that reveals quasi-periodic long-range order. Second, we demon...
Repository : arXiv
Language(s) : Undetermined

Synchronization of Hamiltonian motion and dissipative effects in optical lattices: Evidence for a stochastic resonance

Author(s) : Sanchez-Palencia, Laurent , Grynberg, Gilbert
Description : We theoretically study the influence of the noise strength on the excitation of the Brillouin propagation modes in a dissipative optical lattice. We show that the excitation has a resonant behavior for a specific amount of noise corresponding to the precise synchronization of the Hamiltonian motio...
Repository : arXiv
Language(s) : Undetermined

Disordered quantum gases under control

Author(s) : Sanchez-Palencia, Laurent , Lewenstein, Maciej
Description : When attempting to understand the role of disorder in condensed-matter physics, one faces severe experimental and theoretical difficulties and many questions are still open. Two of the most challenging ones, which have been debated for decades, concern the effect of disorder on superconductivity a...
Repository : arXiv
Language(s) : Undetermined

Localized and extended states in a disordered trap

Author(s) : Pezzé, Luca , Sanchez-Palencia, Laurent
Description : We study Anderson localization in a disordered potential combined with an inhomogeneous trap. We show that the spectrum displays both localized and extended states, which coexist at intermediate energies. In the region of coexistence, we find that the extended states result from confinement by the...
Repository : arXiv
Language(s) : Undetermined

Localization of Bogoliubov quasiparticles in interacting Bose gases with correlated disorder

Author(s) : Lugan, Pierre , Sanchez-Palencia, Laurent
Description : We study the Anderson localization of Bogoliubov quasiparticles (elementary many-body excitations) in a weakly interacting Bose gas of chemical potential $\mu$ subjected to a disordered potential $V$. We introduce a general mapping (valid for weak inhomogeneous potentials in any dimension) of the ...
Repository : arXiv
Language(s) : Undetermined

Tailoring Anderson localization by disorder correlations in 1D speckle potentials

Author(s) : Piraud, Marie , Sanchez-Palencia, Laurent
Description : We study Anderson localization of single particles in continuous, correlated, one-dimensional disordered potentials. We show that tailored correlations can completely change the energy-dependence of the localization length. By considering two suitable models of disorder, we explicitly show that di...
Repository : arXiv
Language(s) : Undetermined

Matter Wave Transport and Anderson Localization in Anisotropic 3D Disorder

Author(s) : Piraud, Marie , Pezzé, Luca , Sanchez-Palencia, Laurent
Description : We study quantum transport in anisotropic 3D disorder and show that non rotation invariant correlations can induce rich diffusion and localization properties. For instance, structured finite-range correlations can lead to the inversion of the transport anisotropy. Moreover, working beyond the self-c...
Repository : HAL - Hyper Article on Line
Language(s) : English

Quantum transport of atomic matterwaves in anisotropic 2D and 3D disorder

Author(s) : Piraud, Marie , Pezzé, Luca , Sanchez-Palencia, Laurent
Description : The macroscopic transport properties in a disordered potential, namely diffusion and weak/strong localization, closely depend on the microscopic and statistical properties of the disorder itself. This dependence is rich of counter-intuitive consequences. It can be particularly exploited in matter wa...
Repository : HAL - Hyper Article on Line
Language(s) : English
<< < 1 2 3 4 5 > >>

Found 72 documents, displaying page 2 of 8