50 citations · 82 across the 15 of their papers we have counts for
16 papers
Operational theory for photonic circuits: generalizing linear optics beyond quantum theory
Ismaël Septembre, Matthias Kleinmann, Martin Plávala
We use the analogy between the quadrature operators in quantum optics and the phase-space coordinates in a mechanical harmonic oscillator to generalise the theory of linear optics…
Quantifying the dimensionality of multiparticle entanglement via partition rank
Sophia Denker, Ismaël Septembre, Robin Krebs +1
The usefulness of entanglement as a resource in quantum technologies increases for larger systems, that is, if more particles or higher-dimensional quantum systems are considered.…
On the emergence of classical stochasticity
Xuan Du Trinh, Ismaël Septembre, Hai-Chau Nguyen
We examine the logical structure of the emergence of classical stochasticity for a quantum system governed by a Pauli-type master equation. It is well-known that while such equatio…
Soliton formation in a bound state in the continuum GaN waveguide polariton laser
V. Develay, O. Bahrova, I. Septembre +11
We study polaritonic bound states in the continuum (BIC) created in GaN waveguides. The existence of symmetry-protected BICs is confirmed by the suppression of light emission and t…
Beam dynamics induced by the quantum metric of exceptional rings
Zhaoyang Zhang, Ismaël Septembre, Zhenzhi Liu +10
Topological physics has broadened its scope from the study of topological insulating phases to include nodal phases containing band structure singularities. The geometry of the cor…
Topological moiré polaritons
I. Septembre, C. Leblanc, D. D. Solnyshkov +1
The combination of an in-plane honeycomb potential and of a photonic spin-orbit coupling (SOC) emulates a photonic/polaritonic analog of bilayer graphene. We show that modulating t…
Soliton formation in an exciton-polariton condensate at a bound state in the continuum
I. Septembre, I. Foudjo, V. Develay +5
Bound states in the continuum (BIC) are of special interest in photonics due to their theoretically infinite radiative lifetime. Here, we design a structure composed of a GaN layer…
Non-Hermitian delocalization in a 2D photonic quasicrystal
Zhaoyang Zhang, Shun Liang, Ismael Septembre +7
Quasicrystals show long-range order, but lack translational symmetry. So far, theoretical and experimental studies suggest that both Hermitian and non-Hermitian quasicrystals show…
Design of a room-temperature topological exciton-polariton laser in a ZnO/TiO-photonic crystal slab
I. Septembre, C. Leblanc, L. Hermet +4
We propose theoretically a scheme to get a room-temperature 2D topological exciton-polariton laser with propagating topological lasing modes. The structure uses guided modes in a p…
The Berry-Foucault Pendulum
D. D. Solnyshkov, I. Septembre, K. Ndiaye +1
The geometric phase is known to play a role both in the rotation of the Foucault pendulum and in the anomalous Hall effect (AHE) due to the Berry curvature. Here, we show that a 2D…
Angular-dependent Andreev reflection on a polaritonic superfluid
I. Septembre, D. D. Solnyshkov, G. Malpuech
We study analytically an analog of the Andreev reflection at a normal-superfluid interface. The polariton gapped superfluid region is achieved by quasi-resonant optical pumping. Th…
Weyl singularities in polaritonic multi-terminal Josephson junctions
Ismaël Septembre, Julia S. Meyer, Dmitry D. Solnyshkov +1
We study theoretically analog multi-terminal Josephson junctions formed by gapped superfluids created upon resonant pumping of cavity exciton-polaritons. We study the -like band…
Domain-wall topology induced by spontaneous symmetry breaking in polariton graphene
D. D. Solnyshkov, C. Leblanc, I. Septembre +1
We present a numerical study of exciton-polariton (polariton) condensation in a staggered polariton graphene showing a gapped s-band at the and valleys. The condensation o…
Annihilation of exceptional points from different Dirac valleys in a 2D photonic system
M. Król, I. Septembre, P. Oliwa +13
Topological physics relies on the existence of Hamiltonian's eigenstate singularities carrying a topological charge, such as quantum vortices, Dirac points, Weyl points and -- in n…
Parametric amplification of topological interface states in synthetic Andreev bands
Ismael Septembre, Sergei Koniakhin, Julia Meyer +2
A driven-dissipative nonlinear photonic system (e.g. exciton-polaritons) can operate in a gapped superfluid regime. We theoretically demonstrate that the reflection of a linear wav…
Towards an experimental proof of superhydrophobicity enhanced by quantum fluctuations freezing on a broadband-absorber metamaterial
M. Sarrazin, I. Septembre, A. Hendrickx +9
Previous theoretical works suggested that superhydrophobicity could be enhanced through partial inhibition of the quantum vacuum modes at the surface of a broadband-absorber metama…