Few photon optics: Ultimate Nonlinearities

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Presentation transcript:

Few photon optics: Ultimate Nonlinearities Photon-exciton interaction (Bose condensation) 500 nm Photon – photon/phonon interaction (Q=2x106) Context Cavity enhanced light mater interaction Photonic crystals Extremely low power Femtojoule down to 2 photons Goals and objectives: Basic studies Bose condensates (strong coupling) Polarons in quantum dots Carbon nanotubes Enhanced components Raman laser (lower noise) Si nanodetectors New functionalities Ultrafast optical gates + Combrié De Rossi Amo Bloch Lanco Boucaud Checoury El Kurdi, Sauvage Deleporte

Basic studies: strong quantum coupling 1/3 Average number of photons Giant photon-photon non-linearities (LPN) Generation of non-classical light Photonic logic gates Low photon number at resonance & Towards photon number QND measurement Exciton-photon polariton (LPN -LPQM) Generation of Bose-Einstein condensates in photonic wires Spontaneous spatial coherence Optical manipulation Trapping, tunnel barrier Towards Optical gates, Interferometers Electrically pumped polaritons Localization versus superfluidity 36 K <n>=0.003 <n>=0.6 <n>=9.7 Nature Physics (2010) III-V Polariton condensates (LPN) (R-NH3)2MX4 Perovskite Polaritons (LPQM)

Enhanced optical interaction 2/3 Photonic crystal cavities on silicon (IEF) Record quality factor (2 millions) Raman emission Spontaneous & stimulated stokes Deterministic Purcell factor Towards Lasers on silicon Raman laser Germanium laser Diamond photonic crystals Carbon nanotubes (LPQM) Excitation transfer With porphyrines molecules Non-covalent functionalization Single object studies Transfer mechanisms Doping effect Hole shifts ABC are 9, 6 and 3 nm. PRA (2010), PRB(R) (2010) Germanium microwires with Si3N4 stressor Nature Materials (2010)

New functionalities 3/3 Nature Photonics (2010) PRB (2011) Ultralow power fJ Ultrafast commutation ps (THALES) III-V Photonic crystals On chip soliton propagation All Optical Circuits Low consumption Telecom, Datacom, Hyperfrequency Ultimate nano-optical imagery (IEF) Semiconductor quantum dots Strong electron-phonon coupling Ultrasmall absorption (10-9) Sub-wavelength resolution l/500 Phonon nanosources Thermal, acoustical response Towards a quantum dot THz saser