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Superconductivity at the edge of a symmetric breaking – SUBRISSYME
In many strongly correlated electron systems, from heavy fermions to pnictides including high temperature superconductors, superconductivity seems to be linked to the vicinity of an electronic or magnetic instability. Despite the wide variety of systems, the generic phase diagram looks similar: a su
MOde LOcking and Solitons in SEmiconductors – MOLOSSE
Semiconductor light sources are often used in pulsed regimes in which they emit trains of spikes and these regimes are both of technical and fundamental interest. In certain conditions, each of these spikes can be described as a «solitary wave« or «soliton«, a surprising wave packet which does
From liquid films to solid foams – F2F
Solid foams are complex networks of bubbles tightly packed in a solid material. These bubbles can be interconnected, like in sponge (opened cells), or separated by a solid film (closed cells), giving very different properties for applications. Despite its importance, the pore connectivity of today’s
Quantum optics with single nanocrystals deterministically coupled to a dielectric micropillar – PONIMI
This project considers the coupling of a single fluorescent nano-emitter with an optical cavity. The emitters are colloidal nanocrystals. Their emission can be tuned in the whole visible range, and they exhibit single-photon emission from cryogenic to room temperatures. The use of a new generation o
Large-N approaches to quantum magnets – LNAQM
Large-N approaches are powerful methods to study quantum many body problems such as those encountered in solid state physics and correlated electron problems. These methods consist in generalizing the problem to an arbitrary number, N, of particle flavors. When N goes to infinity the different flavo
High precision atom interferometry and test of quantum electrodynamics. – INAQED
The goal of this project is to determine the fine structure constant alpha with an uncertainty below 10^{-10}. This measurement will be three times more accurate than the measurement of alpha that is obtained using the quantum electrodynamics theory (QED) with the measurement of the anomalous magnet
Cooper Pair Box Charge Amplifier – COCA
Large efforts have been made in the past decades to develop new types of cryogenic sensors for various applications, ranging from material analysis for the industry to astroparticles detection. Future spatial programs involve detectors working around 50 mK, while their readout electronics (eg preamp
Thermodynamics of Quantum Information with Superconducting Circuits – TIQS
We propose to realize a series of experiments investigating the thermodynamics of quantum information using superconducting circuits. Motivation: Since the introduction of the Maxwell’s demon in 1867, many physicists like Szilard, Landauer, Bennett and Feynman questioned the thermodynamics of s
Femtosecond ENergetic and Intense Compton Source – FENICS
The Compton source that is studied in this project is based on laser plasma interaction. It is produced by colliding a relativistic electron beam from a laser plasma accelerator and an intense femtosecond laser. The goal of the project is to develop and characterize a novel method, simple and effici
Stoichiometry, Structure and Strain Engineering in LiNbO3 and LiTaO3 thin films deposited by PI MOCVD – LiLa
Although LiNbO3 and LiTaO3 films have been fabricated by different techniques, many electrical and electro-optical properties reported are not comparable for those of LiNbO3 and LiTaO3 single-crystals. Thus, the degradation of physical properties in thin films can be explained by the difficulty to c
DYnimical Magneto-electrical coupling in Muliferroics by Optical Spectroscopy – DYMMOS
The present project dwells on the recent surge of interest in a family of very attractive materials in which both ferroelectric and magnetic orders are present. These materials, known as multiferroics, have attracted much attention worldwide because they display larger magnetoelectrical effects as c
AntiBunched Photons emitted by a QPC – AnPhoTEQ
The present proposal aims at participating in the effort of connecting mesoscopic quantum electronics and quantum optics. More specifically, we will investigate the statistical properties of the photons emitted by the shot noise, that is the fluctuating current flowing through a DC-biased phase cohe