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Alberto Amo
Tel: (+33) 1 69 63 61 91
Groupe: Groupe d'Optique des Structures Semi-conductrices
Actions: CFMC

Puce Short biography

After undergraduate studies at Universidad Autónoma de Madrid in Spain, I obtained a PhD in physics from the same university in 2008 with an experimental project on exciton dynamics in semiconductor heterostructures (main results can be found here). Then I did a post-doc at "Laboratoire Kastler Brossel" in París (2008-2010), where I performed pioneering studies in the quantum hydrodynamics of polaritons, half-photon/half-exciton particles. Since 2010 I have a research position at "Laboratoire de Photonique et Nanostructures" of the CNRS in Marcoussis, France. Here I study, in collaboration with Jacqueline Bloch, non-linear optical phenomena using semiconductor microcavites as well as photon dynamics in novel confined geometries. In 2012 I received the IUPAP Young Scientist Prize in Physics of Semiconductors and in 2014 the young physicist award (experimental) granted by the "Real Sociedad Española de Física". Since 2013 I lead the ERC "Starting Grant" project HONEYPOL.

Puce Curriculum Vitae

Puce ERC Starting Grant Honeypol

Particles confined in lattices present fundamental properties which strongly depart from their free 3D counterparts. A notorious example is the honeycomb lattice whose geometry results in massless Dirac-like states showing anomalous (Klein) tunneling and antilocalisation in the presence of disorder. By engineering the phase picked by the particles when tunneling from site to site, lattices also allow for the generation of artificial gauge fields. They result in very strong effective magnetic fields opening the way to observe novel quantum Hall regimes with neutral particles.

The main purpose of this project is to study all these phenomena in a photonic system, namely polaritons in semiconductor microcavities. Polaritons are two-dimensional half-light/half-matter quasi-particles arising from the strong coupling between quantum well excitons and photons confined in a planar microcavity. Their photonic part makes them easy to create and detect using lasers and standard optical techniques, while their excitonic component results in strong interactions. Polaritons can thus be seen as interacting photons.

In this project we will take advantage of recent technological breakthroughs developed at Laboratoire de Photonique et Nanostructures in the etching of semiconductor microcavities, to fabricate microstructures where polaritons can be confined in lattices. Notably, we will study the transport properties of polaritons in a honeycomb lattice and other structures where we will engineer gauge fields acting on photons. In a more general framework, we will create simulators of known and original solid-state systems with full control over the geometry and on-site access to the wavefunctions, allowing the experimental study of their properties.

First results


Fig.1. (a) Polariton honeycomb lattice and its measured energy dipersion (b) revealing two Dirac cones and a flat band. (c) Hexagonal polariton molecule showing spin-orbit coupling effects for photons. (d) Segments show the direction of linear polarization of a polariton condensate holding two counterpropagating vortices in the circularly polarised emission (e, f).

Puce Open positions

If you are interested, send us an email with your cv.

Puce Miscelanea

Interview about "Gravity", Alfonso Cuaron's motion picture, published in www.zerodeconduite.net.

Puce Publications dans des journaux

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