THE PROJECT OF THIS THESIS WAS TO EXPERIMENTALLY REALIZE THE IMPLEMENTATION OF QUANTUM DOT CIRCUITS (QD) IN A CIRCUIT CAVITY QUANTUM ELECTRODYNAMICS (CQED) ARCHITECTURE. THE INTEREST OF SUCH HYBRID SYSTEMS LIES IN THE LIGHT-MATTER INTERACTION THAT OCCURS BETWEEN THE CAVITY MICROWAVE PHOTONS AND THE ELECTRONS OF THE QD. IN THIS THESIS WORK, CARBON NANOTUBES HAVE BEEN CHOSEN AS THE MATERIAL FOR THE QDS. INDEED, IT IS POSSIBLE TO OBSERVE VARIOUS ELECTRONIC TRANSPORT REGIMES IN SUCH SYSTEMS (FABRY-PEROT, COULOMB BLOCKADE AND KONDO). THEIR VERSATILITY IS ALSO A KEYPOINT AS IT IS POSSIBLE TO CONTACT THEM WITH VARIOUS TYPE OF METAL ELECTRODES (NORMAL, SUPERCONDUCTOR, FERROMAGNETIC METAL). THE EXPERIMENTAL REALIZATION OF SUCH DEVICES HAS SHOWN AN ELECTRON-PHOTON COUPLING OF THE ORDER OF 100MHZ, COMPARABLE TO STANDARD CQED COUPLINGS. THIS COUPLING IS TUNABLE BY PURELY ELECTRIC CONTROL. FINALLY, WEHAVE DEMONSTRATED THE DISTANT INTERACTION BETWEEN TWO QDS, SEPARATED BY 80µM, VIA THE MICROWAVE CAVITY PHOTONS. THESE RESULTS SHOWS THAT THESE DEVICES CAN BE USED FOR MANIPULATING THE QUANTUM INFORMATION AS WELL AS FOR SIMULATE ON-CHIP CONDENSED MATTER SITUATIONS. WE HAVE THEREFORE BEEN ABLE TO MEASURE THE QUANTUM CAPACITANCE OF THE QDS, AND IN PARTICULAR IN THE KONDO REGIME. WE HAVE ALSO SIMULATED THE ELECTRON-PHONON POLARONIC SHIFT IN THE CASE OF THE DISTANT INTERACTION BETWEEN THE TWO QDS.
Coupling quantum dot circuits to microwave cavities