Cel "Bose-Einstein condensation, the macroscopic ground state occupation of a system of bosonic particles below a critical temperature, has in the last two decades been observed in cold atomic gases and in solid-state physics quasiparticles. The perhaps most widely known example of a bosonic gas, photons in blackbody radiation, however exhibits no Bose-Einstein condensation, because the particle number is not conserved and at low temperatures the photons disappear in the system’s walls instead of massively occupying the cavity ground mode. This is not the case in a small optical cavity, with a low-frequency cutoff imprinting a spectrum of photon energies restricted to well above the thermal energy. Using a microscopic cavity filled with dye solution at room temperature, my group has recently observed the first Bose-Einstein condensate of photons.Building upon this work, the grant applicant here proposes to study the physics of interacting photon Bose-Einstein condensates in variable potentials. We will study the flow of the light condensate around external perturbations, and exploit signatures for superfluidity of the two-dimensional photon gas. Moreover, the condensate will be loaded into variable potentials induced by optical index changes, forming a periodic array of nanocavities. We plan to investigate the Mott insulating regime, and study thermal equilibrium population of more complex entangled manybody states for the photon gas. Other than in an ultracold atomic gas system, loading and cooling can proceed throughout the lattice manipulation time in our system. We expect to be able to directly condense into a macroscopic occupation of highly entangled quantum states. This is an issue not achievable in present atomic physics Bose-Einstein condensation experiments. In the course of the project, quantum manybody states, when constituting the system ground state, will be macroscopically populated in a thermal equilibrium process." Dziedzina nauki natural sciencesphysical sciencesatomic physicsnatural sciencesphysical sciencescondensed matter physicssolid-state physicsnatural sciencesphysical sciencescondensed matter physicsbose-einstein condensatesnatural sciencesphysical sciencestheoretical physicsparticle physicsphotons Program(-y) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Temat(-y) ERC-AG-PE2 - ERC Advanced Grant - Fundamental constituents of matter Zaproszenie do składania wniosków ERC-2012-ADG_20120216 Zobacz inne projekty w ramach tego zaproszenia System finansowania ERC-AG - ERC Advanced Grant Instytucja przyjmująca RHEINISCHE FRIEDRICH-WILHELMS-UNIVERSITAT BONN Wkład UE € 2 133 560,00 Adres REGINA PACIS WEG 3 53113 Bonn Niemcy Zobacz na mapie Region Nordrhein-Westfalen Köln Bonn, Kreisfreie Stadt Rodzaj działalności Higher or Secondary Education Establishments Kierownik naukowy Ernst Martin Weitz (Prof.) Kontakt administracyjny Daniela Hasenpusch (Ms.) Linki Kontakt z organizacją Opens in new window Strona internetowa Opens in new window Koszt całkowity Brak danych Beneficjenci (1) Sortuj alfabetycznie Sortuj według wkładu UE Rozwiń wszystko Zwiń wszystko RHEINISCHE FRIEDRICH-WILHELMS-UNIVERSITAT BONN Niemcy Wkład UE € 2 133 560,00 Adres REGINA PACIS WEG 3 53113 Bonn Zobacz na mapie Region Nordrhein-Westfalen Köln Bonn, Kreisfreie Stadt Rodzaj działalności Higher or Secondary Education Establishments Kierownik naukowy Ernst Martin Weitz (Prof.) Kontakt administracyjny Daniela Hasenpusch (Ms.) Linki Kontakt z organizacją Opens in new window Strona internetowa Opens in new window Koszt całkowity Brak danych