34 citations · 217 across the 18 of their papers we have counts for
18 papers
High Dose-Rate Ionizing Radiation Source from Tight Focusing in Air of a mJ-class Femtosecond Laser
S. Vallières, J. Powell, T. Connell +7
Ultrashort electron beams with femtosecond to picosecond bunch durations offer unique opportunities to explore active research areas ranging from ultrafast structural dynamics to u…
Effects of discrete topology on quantum transport across a graphene junction: A quantum gravity analogue
Naveed Ahmad Shah, Alonso Contreras-Astorga, François Fillion-Gourdeau +3
In this article, we investigate the effect of next-to-the-nearest atom hopping on Klein tunnelling in graphene. An effective quantum dynamics equation is obtained based on an emerg…
A fast method for evaluating Volume potentials in the Galerkin boundary element method
Sasan Mohyaddin, Johannes Tausch
Three algorithm are proposed to evaluate volume potentials that arise in boundary element methods for elliptic PDEs. The approach is to apply a modified fast multipole method for a…
Two-dimensional Dirac matter in the semiclassical regime
F. Fillion-Gourdeau, E. Lorin, S. Maclean
The semiclassical regime of 2D static Dirac matter is obtained from the Dirac equation in curved space-time. To simplify the formulation, the Cartesian space-time geometry parametr…
Explicit volume-preserving numerical schemes for relativistic trajectories and spin dynamics
R. Cabrera, A. G. Campos, D. I. Bondar +2
A class of explicit numerical schemes is developed to solve for the relativistic dynamics and spin of particles in electromagnetic fields, using the Lorentz-BMT equation formulated…
Numerical quasi-conformal transformations for electron dynamics on strained graphene surfaces
F. Fillion-Gourdeau, E. Lorin, S. MacLean
The dynamics of low energy electrons in general static strained graphene surface is modelled mathematically by the Dirac equation in curved space-time. In Cartesian coordinates, a…
Plunging in the Dirac sea using graphene quantum dots
F. Fillion-Gourdeau, P. Levesque, S. MacLean
The dynamics of low energy charge carriers in a graphene quantum dot subjected to a time-dependent local field is investigated numerically. In particular, we study a configuration…
Pulse shaping in the terahertz frequency range for the control of photo-excited carriers in graphene
Denis Gagnon, Joey Dumont, François Fillion-Gourdeau +1
The shape of a few-cycle terahertz (THz) laser pulse can be optimized to provide control over conduction band populations in graphene. To demonstrate this control in a theoretical…
Carrier-envelope phase effects in graphene
C. Lefebvre, D. Gagnon, F. Fillion-Gourdeau +1
We numerically study the interaction of a terahertz pulse with monolayer graphene. We observe that the electron momentum density is affected by the carrier-envelope phase (CEP) of…
Pulse shape optimization for electron-positron production in rotating fields
François Fillion-Gourdeau, Florian Hebenstreit, Denis Gagnon +1
We optimize the pulse shape and polarization of time-dependent electric fields to maximize the production of electron-positron pairs via strong field quantum electrodynamics proces…
Suppression of multiphoton resonances in driven quantum systems via pulse shape optimization
Denis Gagnon, François Fillion-Gourdeau, Joey Dumont +2
This Letter demonstrates control over multiphoton absorption processes in driven two-level systems, which include for example superconducting qubits or laser-irradiated graphene, t…
Algorithm for the solution of the Dirac equation on digital quantum computers
F. Fillion-Gourdeau, S. MacLean, R. Laflamme
A quantum algorithm that solves the time-dependent Dirac equation on a digital quantum computer is developed and analyzed. The time evolution is performed by an operator splitting…
Efficiently parallelized modeling of tightly focused, large bandwidth laser pulses
Joey Dumont, François Fillion-Gourdeau, Catherine Lefebvre +2
The Stratton-Chu integral representation of electromagnetic fields is used to study the spatio-temporal properties of large bandwidth laser pulses focused by high numerical apertur…
Coherent destruction of tunneling in graphene irradiated by elliptically polarized lasers
Denis Gagnon, François Fillion-Gourdeau, Joey Dumont +2
Photo-induced transition probabilities in graphene are studied theoretically from the viewpoint of Floquet theory. Conduction band populations are computed for a strongly, periodic…
Numerical computation of dynamical Schwinger-like pair production in graphene
F. Fillion-Gourdeau, P. Blain, D. Gagnon +2
The density of electron-hole pairs produced in a graphene sample immersed in a homogeneous time-dependent electrical field is evaluated. Because low energy charge carriers in graph…
Time-domain quantum interference in graphene
F. Fillion-Gourdeau, D. Gagnon, C. Lefebvre +1
The electron momentum density obtained from the Schwinger-like mechanism is evaluated for a graphene sample immersed in a homogeneous time-dependent electric field. Based on the an…
Driven quantum tunneling and pair creation with graphene Landau levels
Denis Gagnon, François Fillion-Gourdeau, Joey Dumont +2
Driven tunneling between graphene Landau levels is theoretically linked to the process of pair creation from vacuum, a prediction of quantum electrodynamics (QED). Landau levels ar…
Scheme for the detection of mixing processes in vacuum
F. Fillion-Gourdeau, C. Lefebvre, S. MacLean
A scheme for the detection of photons generated by vacuum mixing processes is proposed. The strategy consists in the utilization of a high numerical aperture parabolic mirror which…