# Direct observation of Dirac cones and a flatband in a honeycomb lattice for polaritons.

@article{Jacqmin2014DirectOO, title={Direct observation of Dirac cones and a flatband in a honeycomb lattice for polaritons.}, author={T. Jacqmin and Iacopo Carusotto and Isabelle Sagnes and Marco Abbarchi and Dmitry D. Solnyshkov and Guillaume Malpuech and {\'E}lisabeth Galopin and Aristide Lema{\^i}tre and Jacqueline Bloch and Alberto Amo}, journal={Physical review letters}, year={2014}, volume={112 11}, pages={ 116402 } }

Two-dimensional lattices of coupled micropillars etched in a planar semiconductor microcavity offer a workbench to engineer the band structure of polaritons. We report experimental studies of honeycomb lattices where the polariton low-energy dispersion is analogous to that of electrons in graphene. Using energy-resolved photoluminescence, we directly observe Dirac cones, around which the dynamics of polaritons is described by the Dirac equation for massless particles. At higher energies, we… Expand

#### 270 Citations

Polariton lattices for quantum simulation

- Physics
- 2014 Conference on Lasers and Electro-Optics (CLEO) - Laser Science to Photonic Applications
- 2014

Coupled micropillars etched in semiconductor microcavities are an excellent platform to engineer the properties of exciton-polaritons. Thanks to the direct optical access characteristic of… Expand

Quantum confinement of exciton-polaritons in a structured (Al,Ga)As microcavity

- Materials Science, Physics
- 2018

The realization of quantum functionalities with polaritons in an all-semiconductor platform requires the control of the energy and spatial overlap of the wave functions of single polaritons trapped… Expand

Nonlinear Polariton Fluids in a Flatband Reveal Discrete Gap Solitons.

- Medicine, Physics
- Physical review letters
- 2019

The experimental investigation of the nonlinear response of cavity polaritons in the gapped flatband of a one-dimensional Lieb lattice results in the formation of gap solitons with quantized size and abrupt edges, a signature of the frozen propagation of switching fronts. Expand

Edge states in polariton honeycomb lattices

- Materials Science, Physics
- 2015

The experimental study of edge states in atomically-thin layered materials remains a challenge due to the difficult control of the geometry of the sample terminations, the stability of dangling bonds… Expand

Spin-Orbit Coupling for Photons and Polaritons in Microstructures

- Physics
- 2015

We use coupled micropillars etched out of a semiconductor microcavity to engineer a spin-orbit Hamiltonian for photons and polaritons in a microstructure. The coupling between the spin and orbital… Expand

Ultrafast exciton-polariton scattering towards the Dirac points.

- Physics, Medicine
- Journal of physics. Condensed matter : an Institute of Physics journal
- 2016

Nonlinear polariton-polariton scattering in a two-dimensional micropillar-based optical superlattice with hexagonal symmetry is studied to demonstrate that in such a design the time of polariton scattering towards the Dirac points can be drastically decreased. Expand

Kagome lattice from an exciton-polariton perspective

- Physics
- 2016

We study a system of microcavity pillars arranged into a kagome lattice. We show that polarization-dependent tunnel coupling of microcavity pillars leads to the emergence of the effective spin-orbit… Expand

Type-III and Tilted Dirac Cones Emerging from Flat Bands in Photonic Orbital Graphene

- Physics
- Physical Review X
- 2019

The extraordinary electronic properties of Dirac materials, the two-dimensional partners of Weyl semimetals, arise from the linear crossings in their band structure. When the dispersion around the… Expand

Observation of Dirac bands in artificial graphene in small-period nanopatterned GaAs quantum wells

- Physics, Medicine
- Nature Nanotechnology
- 2017

The realization of an AG that has a band structure with vanishing density of states consistent with the presence of MDFs is reported, enabled by a very small lattice constant of the nanofabricated AG patterns superimposed on a two-dimensional electron gas hosted by a high-quality GaAs quantum well. Expand

Dirac Dynamics in Waveguide Arrays: From Zitterbewegung to Photonic Topological Insulators

- Physics
- 2017

Simulating the evolution of a nonrelativistic quantum-mechanical particle in a periodic potential by propagating an optical wave packet in an array of evanescently coupled waveguides has received… Expand

#### References

SHOWING 1-10 OF 34 REFERENCES

APPL

- 2001

Statistical packages have been used for decades to analyze large datasets or to perform mathematically intractable statistical methods. These packages are not capable of working with random variables… Expand

Rev

- Mod. Phys. 85, 299
- 2013

Rev

- Mod. Phys. 81, 109
- 2009

Nat

- Commun. 4, 1749
- 2013

Nat

- Nanotechnol. 8, 625
- 2013

Nature (London) 496

- 196
- 2013

New J

- Phys. 15, 035032
- 2013

New Journal of Physics 15

- 035032
- 2013

Phys

- Rev. B 87, 214503
- 2013

Phys

- Rev. B 88, 115437
- 2013