Search Results - "COLAS, David"

Self-accelerating beam dynamics in the space fractional Schrödinger equation by Colas, David

“…Self-accelerating beams are fascinating solutions of the Schrödinger equation. Thanks to their particular phase engineering, they can accelerate without the…”
Get full text

Finite-energy accelerating beam dynamics in wavelet-based representations by Colas, David, Laussy, Fabrice P., Davis, Matthew J.

“…Accelerating beams are wave packets that appear to spontaneously accelerate without external potentials or applied forces. Since their first physical…”
Get full text

Coupled quantum vortex kinematics and Berry curvature in real space by Dominici, Lorenzo, Rahmani, Amir, Colas, David, Ballarini, Dario, De Giorgi, Milena, Gigli, Giuseppe, Sanvitto, Daniele, Laussy, Fabrice P., Voronova, Nina

“…The Berry curvature provides a powerful tool to unify several branches of science through their geometrical aspect: topology, energy bands, spin and vector…”
Get full text

Full-Bloch beams and ultrafast Rabi-rotating vortices by Dominici, Lorenzo, Colas, David, Gianfrate, Antonio, Rahmani, Amir, Ardizzone, Vincenzo, Ballarini, Dario, De Giorgi, Milena, Gigli, Giuseppe, Laussy, Fabrice P., Sanvitto, Daniele, Voronova, Nina

“…Strongly coupled quantum fields, such as multicomponent atomic condensates, optical fields, and polaritons, are remarkable systems where the simple dynamics of…”
Get full text

Topologically driven Rabi-oscillating interference dislocation by Rahmani, Amir, Colas, David, Voronova, Nina, Jamshidi-Ghaleh, Kazem, Dominici, Lorenzo, Laussy, Fabrice P.

“…Quantum vortices are the quantized version of classical vortices. Their center is a phase singularity or vortex core around which the flow of particles as a…”
Get full text

Personal security alarms for the prevention of assaults against healthcare staff by Perkins, Chloe, Beecher, Deirdre, Aberg, David Colas, Edwards, Phil, Tilley, Nick

“…Background Personal security alarms have been used to try to reduce violence against healthcare staff, some of whose members face relatively high risks of…”
Get full text

A new type of 〈0 0 1〉 junction observed in a (B2) Fe–Al–Ni–B alloy by TEM in situ straining by Fraczkiewicz, Anna, Decamps, Brigitte, Colas, David, Calonne, Olivier, Louchet, François

“…Single crystal foils of an FeAl alloy containing Ni and B are strained at elevated temperatures in an in situ dedicated transmission electron microscope (TEM)…”
Get full text

Determination of the Conditions of the Chromium Nitride Formation in a ULC Steel of Fe–Cr–N Type with 0.7% Cr by Massardier, Véronique, Colas, David, Merlin, Jacques

“…The nitrogen content in solution in the extra-mild steel sheets used in automotive or packaging industry after the different steps of their processing plays an…”
Get full text

Self-Interfering Wave Packets by Colas, David, Laussy, Fabrice P

“…We study the propagation of noninteracting polariton wave packets. We show how two qualitatively different concepts of mass that arise from the peculiar…”
Get full text

Negative-Mass Effects in Spin-Orbit Coupled Bose-Einstein Condensates by Colas, David, Laussy, Fabrice P, Davis, Matthew J

“…Negative effective masses can be realized by engineering the dispersion relation of a variety of quantum systems. A recent experiment with spin-orbit coupled…”
Get full text

Shaping the topology of light with a moving Rabi-oscillating vortex by Dominici, Lorenzo, Voronova, Nina, Colas, David, Gianfrate, Antonio, Rahmani, Amir, Ardizzone, Vincenzo, Ballarini, Dario, De Giorgi, Milena, Gigli, Giuseppe, Laussy, Fabrice P., Sanvitto, Daniele

“…Quantum vortices are the analogue of classical vortices in optics, Bose-Einstein condensates, superfluids and superconductors, where they provide the…”
Get full text

Polarization shaping of Poincaré beams by polariton oscillations by Colas, David, Dominici, Lorenzo, Donati, Stefano, Pervishko, Anastasiia A, Liew, Timothy CH, Shelykh, Ivan A, Ballarini, Dario, de Giorgi, Milena, Bramati, Alberto, Gigli, Giuseppe, Valle, Elena del, Laussy, Fabrice P, Kavokin, Alexey V, Sanvitto, Daniele

“…We propose theoretically and demonstrate experimentally the generation of light pulses whose polarization varies temporally to cover selected areas of the…”
Get full text

Self-accelerating beam dynamics in the space fractional Schr\"odinger equation by Colas, David

“…Phys. Rev. Research 2, 033274 (2020) Self-accelerating beams are fascinating solutions of the Schr\"odinger equation. Thanks to their particular phase…”
Get full text

A new type of (0 0 1) junction observed in a (B2) Fe-Al-Ni-B alloy by TEM in situ straining by FRACZKIEWICZ, Anna, DECAMPS, Brigitte, COLAS, David, CALONNE, Olivier, LOUCHET, François

Get full text

Nickel-induced strengthening of boron-doped FeAl (B2) alloys by Colas, David, Fraczkiewicz, Anna, Louchet, François

“…The effect of nickel additions on yield stress temperature dependence as well as on deformation mechanisms was investigated for Fe–Al alloys containing 40% Al…”
Get full text

Crossover Between Quantum and Classical Waves and High Frequency Localization Landscapes by Colas, David, Bellis, Cédric, Lombard, Bruno, Cottereau, Régis

“…Anderson localization is a universal interference phenomenon occurring when a wave evolves through a random medium and it has been observed in a great variety…”
Get full text

Coupled quantum vortex kinematics and Berry curvature in real space by Dominici, Lorenzo, Rahmani, Amir, Colas, David, Ballarini, Dario, De Giorgi, Milena, Gigli, Giuseppe, Laussy, Fabrice P, Sanvitto, Daniele, Voronova, Nina

“…Commun. Phys. 6, 197 (2023) The Berry curvature provides a powerful tool to unify several branches of science through their geometrical aspect: topology,…”
Get full text

Self-interfering wavepackets by Colas, David, Laussy, Fabrice

“…Phys. Rev. Lett. 116, 026401 (2016) We study the propagation of non-interacting polariton wavepackets. We show how two qualitatively different concepts of mass…”
Get full text

Finite-energy accelerating beam dynamics in wavelet-based representations by Colas, David, Laussy, Fabrice P, Davis, Matthew J

“…Phys. Rev. Research 2, 023337 (2020) Accelerating beams are wave packets which appear to spontaneously accelerate without external potentials or applied…”
Get full text

Topologically driven Rabi-oscillating interference dislocation by Rahmani, Amir, Colas, David, Voronova, Nina, Jamshidi-Ghaleh, Kazem, Dominici, Lorenzo, Laussy, and Fabrice P

“…Nanophotonics, vol. 11, no. 12, 2022, pp. 2909-2919 Quantum vortices are the quantized version of classical vortices. Their center is a phase singularity or…”
Get full text