Pierre Bernard Henri Lugan

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Partial autoionization rates of doubly excited one-dimensional helium in the collinear Zee and eZe configuration are obtained by means of the complex rotation method. The approach presented here relies on a projection of back-rotated resonance wave functio ...

We demonstrate three-dimensional spatial confinement of exciton-polaritons in a semiconductor microcavity. Polaritons are confined within a micron-sized region of slightly larger cavity thickness, called mesa, through lateral trapping of their photon compo ...

An iterative scheme based on the kernel polynomial method is devised for the efficient computation of the one-body density matrix of weakly interacting Bose gases within Bogoliubov theory. This scheme is used to analyze the coherence properties of disorder ...

We study the two-dimensional weakly repulsive Bose gas at zero temperature in the presence of correlated disorder. Using large-scale simulations, we show that the low-energy Bogoliubov cumulative density of states remains quadratic up to a critical disorde ...

Anderson localization of Bogoliubov excitations is studied for disordered lattice Bose gases in planar quasi-one-dimensional geometries. The inverse localization length is computed as function of energy by a numerical transfer-matrix scheme, for strips of ...

Pierre Bernard Henri Lugan

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Extracting partial decay rates of helium from complex rotation: autoionizing resonances of the one-dimensional configurations

Engineering the spatial confinement of exciton polaritons in semiconductors

Superfluid–insulator transition in weakly interacting disordered Bose gases: a kernel polynomial approach

Superfluid-insulator transition of two-dimensional disordered Bose gases

Anderson localization of Bogoliubov excitations on quasi-1D strips